{
  "key": "google_play_books",
  "name": "Play Books",
  "query_field": "q",
  "groups": [
    {
      "key": "basic",
      "title_key": "serp.form.groups.basic",
      "title": "Basic Parameters",
      "collapsible": false,
      "fields": [
        {
          "key": "q",
          "type": "text",
          "label_key": "serp.fields.q",
          "label": "Search Query",
          "help": "The search keyword used by the selected engine. Example: pizza."
        },
        {
          "key": "gl",
          "type": "select",
          "default_value": "us",
          "label_key": "serp.fields.gl",
          "label": "Country/Region",
          "help": "Targets results by country or region. Example: us.",
          "options": [
            {
              "value": "af",
              "label": "Afghanistan"
            },
            {
              "value": "al",
              "label": "Albania"
            },
            {
              "value": "dz",
              "label": "Algeria"
            },
            {
              "value": "as",
              "label": "American Samoa"
            },
            {
              "value": "ad",
              "label": "Andorra"
            },
            {
              "value": "ao",
              "label": "Angola"
            },
            {
              "value": "ai",
              "label": "Anguilla"
            },
            {
              "value": "aq",
              "label": "Antarctica"
            },
            {
              "value": "ag",
              "label": "Antigua and Barbuda"
            },
            {
              "value": "ar",
              "label": "Argentina"
            },
            {
              "value": "am",
              "label": "Armenia"
            },
            {
              "value": "aw",
              "label": "Aruba"
            },
            {
              "value": "au",
              "label": "Australia"
            },
            {
              "value": "at",
              "label": "Austria"
            },
            {
              "value": "az",
              "label": "Azerbaijan"
            },
            {
              "value": "bs",
              "label": "Bahamas"
            },
            {
              "value": "bh",
              "label": "Bahrain"
            },
            {
              "value": "bd",
              "label": "Bangladesh"
            },
            {
              "value": "bb",
              "label": "Barbados"
            },
            {
              "value": "by",
              "label": "Belarus"
            },
            {
              "value": "be",
              "label": "Belgium"
            },
            {
              "value": "bz",
              "label": "Belize"
            },
            {
              "value": "bj",
              "label": "Benin"
            },
            {
              "value": "bm",
              "label": "Bermuda"
            },
            {
              "value": "bt",
              "label": "Bhutan"
            },
            {
              "value": "bo",
              "label": "Bolivia"
            },
            {
              "value": "ba",
              "label": "Bosnia and Herzegovina"
            },
            {
              "value": "bw",
              "label": "Botswana"
            },
            {
              "value": "bv",
              "label": "Bouvet Island"
            },
            {
              "value": "br",
              "label": "Brazil"
            },
            {
              "value": "io",
              "label": "British Indian Ocean Territory"
            },
            {
              "value": "bn",
              "label": "Brunei Darussalam"
            },
            {
              "value": "bg",
              "label": "Bulgaria"
            },
            {
              "value": "bf",
              "label": "Burkina Faso"
            },
            {
              "value": "bi",
              "label": "Burundi"
            },
            {
              "value": "kh",
              "label": "Cambodia"
            },
            {
              "value": "cm",
              "label": "Cameroon"
            },
            {
              "value": "ca",
              "label": "Canada"
            },
            {
              "value": "cv",
              "label": "Cape Verde"
            },
            {
              "value": "ky",
              "label": "Cayman Islands"
            },
            {
              "value": "cf",
              "label": "Central African Republic"
            },
            {
              "value": "td",
              "label": "Chad"
            },
            {
              "value": "cl",
              "label": "Chile"
            },
            {
              "value": "cn",
              "label": "China"
            },
            {
              "value": "cx",
              "label": "Christmas Island"
            },
            {
              "value": "cc",
              "label": "Cocos (Keeling) Islands"
            },
            {
              "value": "co",
              "label": "Colombia"
            },
            {
              "value": "km",
              "label": "Comoros"
            },
            {
              "value": "cg",
              "label": "Congo"
            },
            {
              "value": "cd",
              "label": "Congo, the Democratic Republic of the"
            },
            {
              "value": "ck",
              "label": "Cook Islands"
            },
            {
              "value": "cr",
              "label": "Costa Rica"
            },
            {
              "value": "ci",
              "label": "Cote D'ivoire"
            },
            {
              "value": "hr",
              "label": "Croatia"
            },
            {
              "value": "cu",
              "label": "Cuba"
            },
            {
              "value": "cy",
              "label": "Cyprus"
            },
            {
              "value": "cz",
              "label": "Czech Republic"
            },
            {
              "value": "dk",
              "label": "Denmark"
            },
            {
              "value": "dj",
              "label": "Djibouti"
            },
            {
              "value": "dm",
              "label": "Dominica"
            },
            {
              "value": "do",
              "label": "Dominican Republic"
            },
            {
              "value": "ec",
              "label": "Ecuador"
            },
            {
              "value": "eg",
              "label": "Egypt"
            },
            {
              "value": "sv",
              "label": "El Salvador"
            },
            {
              "value": "gq",
              "label": "Equatorial Guinea"
            },
            {
              "value": "er",
              "label": "Eritrea"
            },
            {
              "value": "ee",
              "label": "Estonia"
            },
            {
              "value": "et",
              "label": "Ethiopia"
            },
            {
              "value": "fk",
              "label": "Falkland Islands (Malvinas)"
            },
            {
              "value": "fo",
              "label": "Faroe Islands"
            },
            {
              "value": "fj",
              "label": "Fiji"
            },
            {
              "value": "fi",
              "label": "Finland"
            },
            {
              "value": "fr",
              "label": "France"
            },
            {
              "value": "gf",
              "label": "French Guiana"
            },
            {
              "value": "pf",
              "label": "French Polynesia"
            },
            {
              "value": "tf",
              "label": "French Southern Territories"
            },
            {
              "value": "ga",
              "label": "Gabon"
            },
            {
              "value": "gm",
              "label": "Gambia"
            },
            {
              "value": "ge",
              "label": "Georgia"
            },
            {
              "value": "de",
              "label": "Germany"
            },
            {
              "value": "gh",
              "label": "Ghana"
            },
            {
              "value": "gi",
              "label": "Gibraltar"
            },
            {
              "value": "gr",
              "label": "Greece"
            },
            {
              "value": "gl",
              "label": "Greenland"
            },
            {
              "value": "gd",
              "label": "Grenada"
            },
            {
              "value": "gp",
              "label": "Guadeloupe"
            },
            {
              "value": "gu",
              "label": "Guam"
            },
            {
              "value": "gt",
              "label": "Guatemala"
            },
            {
              "value": "gg",
              "label": "Guernsey"
            },
            {
              "value": "gn",
              "label": "Guinea"
            },
            {
              "value": "gw",
              "label": "Guinea-Bissau"
            },
            {
              "value": "gy",
              "label": "Guyana"
            },
            {
              "value": "ht",
              "label": "Haiti"
            },
            {
              "value": "hm",
              "label": "Heard Island and Mcdonald Islands"
            },
            {
              "value": "va",
              "label": "Holy See (Vatican City State)"
            },
            {
              "value": "hn",
              "label": "Honduras"
            },
            {
              "value": "hk",
              "label": "Hong Kong"
            },
            {
              "value": "hu",
              "label": "Hungary"
            },
            {
              "value": "is",
              "label": "Iceland"
            },
            {
              "value": "in",
              "label": "India"
            },
            {
              "value": "id",
              "label": "Indonesia"
            },
            {
              "value": "ir",
              "label": "Iran, Islamic Republic of"
            },
            {
              "value": "iq",
              "label": "Iraq"
            },
            {
              "value": "ie",
              "label": "Ireland"
            },
            {
              "value": "im",
              "label": "Isle of Man"
            },
            {
              "value": "il",
              "label": "Israel"
            },
            {
              "value": "it",
              "label": "Italy"
            },
            {
              "value": "je",
              "label": "Jersey"
            },
            {
              "value": "jm",
              "label": "Jamaica"
            },
            {
              "value": "jp",
              "label": "Japan"
            },
            {
              "value": "jo",
              "label": "Jordan"
            },
            {
              "value": "kz",
              "label": "Kazakhstan"
            },
            {
              "value": "ke",
              "label": "Kenya"
            },
            {
              "value": "ki",
              "label": "Kiribati"
            },
            {
              "value": "kp",
              "label": "Korea, Democratic People's Republic of"
            },
            {
              "value": "kr",
              "label": "Korea, Republic of"
            },
            {
              "value": "kw",
              "label": "Kuwait"
            },
            {
              "value": "kg",
              "label": "Kyrgyzstan"
            },
            {
              "value": "la",
              "label": "Lao People's Democratic Republic"
            },
            {
              "value": "lv",
              "label": "Latvia"
            },
            {
              "value": "lb",
              "label": "Lebanon"
            },
            {
              "value": "ls",
              "label": "Lesotho"
            },
            {
              "value": "lr",
              "label": "Liberia"
            },
            {
              "value": "ly",
              "label": "Libyan Arab Jamahiriya"
            },
            {
              "value": "li",
              "label": "Liechtenstein"
            },
            {
              "value": "lt",
              "label": "Lithuania"
            },
            {
              "value": "lu",
              "label": "Luxembourg"
            },
            {
              "value": "mo",
              "label": "Macao"
            },
            {
              "value": "mk",
              "label": "Macedonia, the Former Yugosalv Republic of"
            },
            {
              "value": "mg",
              "label": "Madagascar"
            },
            {
              "value": "mw",
              "label": "Malawi"
            },
            {
              "value": "my",
              "label": "Malaysia"
            },
            {
              "value": "mv",
              "label": "Maldives"
            },
            {
              "value": "ml",
              "label": "Mali"
            },
            {
              "value": "mt",
              "label": "Malta"
            },
            {
              "value": "mh",
              "label": "Marshall Islands"
            },
            {
              "value": "mq",
              "label": "Martinique"
            },
            {
              "value": "mr",
              "label": "Mauritania"
            },
            {
              "value": "mu",
              "label": "Mauritius"
            },
            {
              "value": "yt",
              "label": "Mayotte"
            },
            {
              "value": "mx",
              "label": "Mexico"
            },
            {
              "value": "fm",
              "label": "Micronesia, Federated States of"
            },
            {
              "value": "md",
              "label": "Moldova, Republic of"
            },
            {
              "value": "mc",
              "label": "Monaco"
            },
            {
              "value": "mn",
              "label": "Mongolia"
            },
            {
              "value": "me",
              "label": "Montenegro"
            },
            {
              "value": "ms",
              "label": "Montserrat"
            },
            {
              "value": "ma",
              "label": "Morocco"
            },
            {
              "value": "mz",
              "label": "Mozambique"
            },
            {
              "value": "mm",
              "label": "Myanmar"
            },
            {
              "value": "na",
              "label": "Namibia"
            },
            {
              "value": "nr",
              "label": "Nauru"
            },
            {
              "value": "np",
              "label": "Nepal"
            },
            {
              "value": "nl",
              "label": "Netherlands"
            },
            {
              "value": "an",
              "label": "Netherlands Antilles"
            },
            {
              "value": "nc",
              "label": "New Caledonia"
            },
            {
              "value": "nz",
              "label": "New Zealand"
            },
            {
              "value": "ni",
              "label": "Nicaragua"
            },
            {
              "value": "ne",
              "label": "Niger"
            },
            {
              "value": "ng",
              "label": "Nigeria"
            },
            {
              "value": "nu",
              "label": "Niue"
            },
            {
              "value": "nf",
              "label": "Norfolk Island"
            },
            {
              "value": "mp",
              "label": "Northern Mariana Islands"
            },
            {
              "value": "no",
              "label": "Norway"
            },
            {
              "value": "om",
              "label": "Oman"
            },
            {
              "value": "pk",
              "label": "Pakistan"
            },
            {
              "value": "pw",
              "label": "Palau"
            },
            {
              "value": "ps",
              "label": "Palestinian Territory, Occupied"
            },
            {
              "value": "pa",
              "label": "Panama"
            },
            {
              "value": "pg",
              "label": "Papua New Guinea"
            },
            {
              "value": "py",
              "label": "Paraguay"
            },
            {
              "value": "pe",
              "label": "Peru"
            },
            {
              "value": "ph",
              "label": "Philippines"
            },
            {
              "value": "pn",
              "label": "Pitcairn"
            },
            {
              "value": "pl",
              "label": "Poland"
            },
            {
              "value": "pt",
              "label": "Portugal"
            },
            {
              "value": "pr",
              "label": "Puerto Rico"
            },
            {
              "value": "qa",
              "label": "Qatar"
            },
            {
              "value": "re",
              "label": "Reunion"
            },
            {
              "value": "ro",
              "label": "Romania"
            },
            {
              "value": "ru",
              "label": "Russian Federation"
            },
            {
              "value": "rw",
              "label": "Rwanda"
            },
            {
              "value": "sh",
              "label": "Saint Helena"
            },
            {
              "value": "kn",
              "label": "Saint Kitts and Nevis"
            },
            {
              "value": "lc",
              "label": "Saint Lucia"
            },
            {
              "value": "pm",
              "label": "Saint Pierre and Miquelon"
            },
            {
              "value": "vc",
              "label": "Saint Vincent and the Grenadines"
            },
            {
              "value": "ws",
              "label": "Samoa"
            },
            {
              "value": "sm",
              "label": "San Marino"
            },
            {
              "value": "st",
              "label": "Sao Tome and Principe"
            },
            {
              "value": "sa",
              "label": "Saudi Arabia"
            },
            {
              "value": "sn",
              "label": "Senegal"
            },
            {
              "value": "rs",
              "label": "Serbia"
            },
            {
              "value": "sc",
              "label": "Seychelles"
            },
            {
              "value": "sl",
              "label": "Sierra Leone"
            },
            {
              "value": "sg",
              "label": "Singapore"
            },
            {
              "value": "sk",
              "label": "Slovakia"
            },
            {
              "value": "si",
              "label": "Slovenia"
            },
            {
              "value": "sb",
              "label": "Solomon Islands"
            },
            {
              "value": "so",
              "label": "Somalia"
            },
            {
              "value": "za",
              "label": "South Africa"
            },
            {
              "value": "gs",
              "label": "South Georgia and the South Sandwich Islands"
            },
            {
              "value": "es",
              "label": "Spain"
            },
            {
              "value": "lk",
              "label": "Sri Lanka"
            },
            {
              "value": "sd",
              "label": "Sudan"
            },
            {
              "value": "sr",
              "label": "Suriname"
            },
            {
              "value": "sj",
              "label": "Svalbard and Jan Mayen"
            },
            {
              "value": "sz",
              "label": "Swaziland"
            },
            {
              "value": "se",
              "label": "Sweden"
            },
            {
              "value": "ch",
              "label": "Switzerland"
            },
            {
              "value": "sy",
              "label": "Syrian Arab Republic"
            },
            {
              "value": "tw",
              "label": "Taiwan, Province of China"
            },
            {
              "value": "tj",
              "label": "Tajikistan"
            },
            {
              "value": "tz",
              "label": "Tanzania, United Republic of"
            },
            {
              "value": "th",
              "label": "Thailand"
            },
            {
              "value": "tl",
              "label": "Timor-Leste"
            },
            {
              "value": "tg",
              "label": "Togo"
            },
            {
              "value": "tk",
              "label": "Tokelau"
            },
            {
              "value": "to",
              "label": "Tonga"
            },
            {
              "value": "tt",
              "label": "Trinidad and Tobago"
            },
            {
              "value": "tn",
              "label": "Tunisia"
            },
            {
              "value": "tr",
              "label": "Turkiye"
            },
            {
              "value": "tm",
              "label": "Turkmenistan"
            },
            {
              "value": "tc",
              "label": "Turks and Caicos Islands"
            },
            {
              "value": "tv",
              "label": "Tuvalu"
            },
            {
              "value": "ug",
              "label": "Uganda"
            },
            {
              "value": "ua",
              "label": "Ukraine"
            },
            {
              "value": "ae",
              "label": "United Arab Emirates"
            },
            {
              "value": "uk",
              "label": "United Kingdom"
            },
            {
              "value": "gb",
              "label": "United Kingdom"
            },
            {
              "value": "us",
              "label": "United States"
            },
            {
              "value": "um",
              "label": "United States Minor Outlying Islands"
            },
            {
              "value": "uy",
              "label": "Uruguay"
            },
            {
              "value": "uz",
              "label": "Uzbekistan"
            },
            {
              "value": "vu",
              "label": "Vanuatu"
            },
            {
              "value": "ve",
              "label": "Venezuela"
            },
            {
              "value": "vn",
              "label": "Viet Nam"
            },
            {
              "value": "vg",
              "label": "Virgin Islands, British"
            },
            {
              "value": "vi",
              "label": "Virgin Islands, U.S."
            },
            {
              "value": "wf",
              "label": "Wallis and Futuna"
            },
            {
              "value": "eh",
              "label": "Western Sahara"
            },
            {
              "value": "ye",
              "label": "Yemen"
            },
            {
              "value": "zm",
              "label": "Zambia"
            },
            {
              "value": "zw",
              "label": "Zimbabwe"
            }
          ]
        },
        {
          "key": "hl",
          "type": "select",
          "default_value": "en",
          "label_key": "serp.fields.hl",
          "label": "Language",
          "help": "Sets the interface language for returned results. Example: en.",
          "options": [
            {
              "value": "af",
              "label": "Afrikaans"
            },
            {
              "value": "ak",
              "label": "Akan"
            },
            {
              "value": "ws",
              "label": "Samoa"
            },
            {
              "value": "am",
              "label": "Amharic"
            },
            {
              "value": "ar",
              "label": "Arabic"
            },
            {
              "value": "hy",
              "label": "Armenian"
            },
            {
              "value": "az",
              "label": "Azerbaijani"
            },
            {
              "value": "ceb",
              "label": "Binisaya"
            },
            {
              "value": "eu",
              "label": "Basque"
            },
            {
              "value": "be",
              "label": "Belarusian"
            },
            {
              "value": "bem",
              "label": "Bemba"
            },
            {
              "value": "bn",
              "label": "Bengali"
            },
            {
              "value": "bh",
              "label": "Bihari"
            },
            {
              "value": "xx-bork",
              "label": "Bork, bork, bork!"
            },
            {
              "value": "bs",
              "label": "Bosnian"
            },
            {
              "value": "br",
              "label": "Breton"
            },
            {
              "value": "bg",
              "label": "Bulgarian"
            },
            {
              "value": "bt",
              "label": "Bhutanese"
            },
            {
              "value": "km",
              "label": "Cambodian"
            },
            {
              "value": "ca",
              "label": "Catalan"
            },
            {
              "value": "chr",
              "label": "Cherokee"
            },
            {
              "value": "ny",
              "label": "Chichewa"
            },
            {
              "value": "zh-cn",
              "label": "Chinese (Simplified)"
            },
            {
              "value": "zh-tw",
              "label": "Chinese (Traditional)"
            },
            {
              "value": "co",
              "label": "Corsican"
            },
            {
              "value": "hr",
              "label": "Croatian"
            },
            {
              "value": "cs",
              "label": "Czech"
            },
            {
              "value": "da",
              "label": "Danish"
            },
            {
              "value": "nl",
              "label": "Dutch"
            },
            {
              "value": "xx-elmer",
              "label": "Elmer Fudd"
            },
            {
              "value": "en",
              "label": "English"
            },
            {
              "value": "eo",
              "label": "Esperanto"
            },
            {
              "value": "et",
              "label": "Estonian"
            },
            {
              "value": "ee",
              "label": "Ewe"
            },
            {
              "value": "fo",
              "label": "Faroese"
            },
            {
              "value": "tl",
              "label": "Filipino"
            },
            {
              "value": "fi",
              "label": "Finnish"
            },
            {
              "value": "fr",
              "label": "French"
            },
            {
              "value": "fy",
              "label": "Frisian"
            },
            {
              "value": "gaa",
              "label": "Ga"
            },
            {
              "value": "gl",
              "label": "Galician"
            },
            {
              "value": "ka",
              "label": "Georgian"
            },
            {
              "value": "de",
              "label": "German"
            },
            {
              "value": "el",
              "label": "Greek"
            },
            {
              "value": "kl",
              "label": "Greenlandic"
            },
            {
              "value": "gn",
              "label": "Guarani"
            },
            {
              "value": "gu",
              "label": "Gujarati"
            },
            {
              "value": "xx-hacker",
              "label": "Hacker"
            },
            {
              "value": "ht",
              "label": "Haitian Creole"
            },
            {
              "value": "ha",
              "label": "Hausa"
            },
            {
              "value": "haw",
              "label": "Hawaiian"
            },
            {
              "value": "iw",
              "label": "Hebrew"
            },
            {
              "value": "he",
              "label": "Hebrew"
            },
            {
              "value": "hi",
              "label": "Hindi"
            },
            {
              "value": "hu",
              "label": "Hungarian"
            },
            {
              "value": "is",
              "label": "Icelandic"
            },
            {
              "value": "ig",
              "label": "Igbo"
            },
            {
              "value": "id",
              "label": "Indonesian"
            },
            {
              "value": "ia",
              "label": "Interlingua"
            },
            {
              "value": "ga",
              "label": "Irish"
            },
            {
              "value": "it",
              "label": "Italian"
            },
            {
              "value": "ja",
              "label": "Japanese"
            },
            {
              "value": "jw",
              "label": "Javanese"
            },
            {
              "value": "kn",
              "label": "Kannada"
            },
            {
              "value": "kk",
              "label": "Kazakh"
            },
            {
              "value": "rw",
              "label": "Kinyarwanda"
            },
            {
              "value": "rn",
              "label": "Kirundi"
            },
            {
              "value": "xx-klingon",
              "label": "Klingon"
            },
            {
              "value": "kg",
              "label": "Kongo"
            },
            {
              "value": "ko",
              "label": "Korean"
            },
            {
              "value": "kri",
              "label": "Krio (Sierra Leone)"
            },
            {
              "value": "ku",
              "label": "Kurdish"
            },
            {
              "value": "ckb",
              "label": "Kurdish (Soranî)"
            },
            {
              "value": "ky",
              "label": "Kyrgyz"
            },
            {
              "value": "lo",
              "label": "Laothian"
            },
            {
              "value": "la",
              "label": "Latin"
            },
            {
              "value": "lv",
              "label": "Latvian"
            },
            {
              "value": "ln",
              "label": "Lingala"
            },
            {
              "value": "lt",
              "label": "Lithuanian"
            },
            {
              "value": "loz",
              "label": "Lozi"
            },
            {
              "value": "lg",
              "label": "Luganda"
            },
            {
              "value": "ach",
              "label": "Luo"
            },
            {
              "value": "mk",
              "label": "Macedonian"
            },
            {
              "value": "mg",
              "label": "Malagasy"
            },
            {
              "value": "ms",
              "label": "Malay"
            },
            {
              "value": "ml",
              "label": "Malayalam"
            },
            {
              "value": "mt",
              "label": "Maltese"
            },
            {
              "value": "mv",
              "label": "Maldives"
            },
            {
              "value": "mi",
              "label": "Maori"
            },
            {
              "value": "mr",
              "label": "Marathi"
            },
            {
              "value": "mfe",
              "label": "Mauritian Creole"
            },
            {
              "value": "mo",
              "label": "Moldavian"
            },
            {
              "value": "mn",
              "label": "Mongolian"
            },
            {
              "value": "sr-me",
              "label": "Montenegrin"
            },
            {
              "value": "my",
              "label": "Myanmar"
            },
            {
              "value": "ne",
              "label": "Nepali"
            },
            {
              "value": "pcm",
              "label": "Nigerian Pidgin"
            },
            {
              "value": "nso",
              "label": "Northern Sotho"
            },
            {
              "value": "no",
              "label": "Norwegian"
            },
            {
              "value": "nn",
              "label": "Norwegian (Nynorsk)"
            },
            {
              "value": "oc",
              "label": "Occitan"
            },
            {
              "value": "or",
              "label": "Oriya"
            },
            {
              "value": "om",
              "label": "Oromo"
            },
            {
              "value": "ps",
              "label": "Pashto"
            },
            {
              "value": "fa",
              "label": "Persian"
            },
            {
              "value": "xx-pirate",
              "label": "Pirate"
            },
            {
              "value": "pl",
              "label": "Polish"
            },
            {
              "value": "pt",
              "label": "Portuguese"
            },
            {
              "value": "pt-br",
              "label": "Portuguese (Brazil)"
            },
            {
              "value": "pt-pt",
              "label": "Portuguese (Portugal)"
            },
            {
              "value": "pa",
              "label": "Punjabi"
            },
            {
              "value": "qu",
              "label": "Quechua"
            },
            {
              "value": "ro",
              "label": "Romanian"
            },
            {
              "value": "rm",
              "label": "Romansh"
            },
            {
              "value": "nyn",
              "label": "Runyakitara"
            },
            {
              "value": "ru",
              "label": "Russian"
            },
            {
              "value": "gd",
              "label": "Scots Gaelic"
            },
            {
              "value": "sr",
              "label": "Serbian"
            },
            {
              "value": "sh",
              "label": "Serbo-Croatian"
            },
            {
              "value": "st",
              "label": "Sesotho"
            },
            {
              "value": "tn",
              "label": "Setswana"
            },
            {
              "value": "crs",
              "label": "Seychellois Creole"
            },
            {
              "value": "sn",
              "label": "Shona"
            },
            {
              "value": "sd",
              "label": "Sindhi"
            },
            {
              "value": "si",
              "label": "Sinhalese"
            },
            {
              "value": "sk",
              "label": "Slovak"
            },
            {
              "value": "sl",
              "label": "Slovenian"
            },
            {
              "value": "so",
              "label": "Somali"
            },
            {
              "value": "es",
              "label": "Spanish"
            },
            {
              "value": "es-419",
              "label": "Spanish (Latin American)"
            },
            {
              "value": "su",
              "label": "Sundanese"
            },
            {
              "value": "sw",
              "label": "Swahili"
            },
            {
              "value": "sv",
              "label": "Swedish"
            },
            {
              "value": "tg",
              "label": "Tajik"
            },
            {
              "value": "ta",
              "label": "Tamil"
            },
            {
              "value": "tt",
              "label": "Tatar"
            },
            {
              "value": "te",
              "label": "Telugu"
            },
            {
              "value": "th",
              "label": "Thai"
            },
            {
              "value": "ti",
              "label": "Tigrinya"
            },
            {
              "value": "to",
              "label": "Tonga"
            },
            {
              "value": "lua",
              "label": "Tshiluba"
            },
            {
              "value": "tum",
              "label": "Tumbuka"
            },
            {
              "value": "tr",
              "label": "Turkish"
            },
            {
              "value": "tk",
              "label": "Turkmen"
            },
            {
              "value": "tw",
              "label": "Twi"
            },
            {
              "value": "ug",
              "label": "Uighur"
            },
            {
              "value": "uk",
              "label": "Ukrainian"
            },
            {
              "value": "ur",
              "label": "Urdu"
            },
            {
              "value": "uz",
              "label": "Uzbek"
            },
            {
              "value": "vu",
              "label": "Vanuatu"
            },
            {
              "value": "vi",
              "label": "Vietnamese"
            },
            {
              "value": "cy",
              "label": "Welsh"
            },
            {
              "value": "wo",
              "label": "Wolof"
            },
            {
              "value": "xh",
              "label": "Xhosa"
            },
            {
              "value": "yi",
              "label": "Yiddish"
            },
            {
              "value": "yo",
              "label": "Yoruba"
            },
            {
              "value": "zu",
              "label": "Zulu"
            }
          ]
        },
        {
          "key": "books_category",
          "type": "select",
          "label_key": "serp.fields.books_category",
          "label": "Books category",
          "help": "Filter by book category",
          "options": [
            {
              "value": "coll_1665",
              "label": "Books - Arts & entertainment"
            },
            {
              "value": "subj_Art___Humor.AH_Art",
              "label": "Books - Arts & entertainment - Art"
            },
            {
              "value": "subj_Art___Humor.AH_Drama",
              "label": "Books - Arts & entertainment - Drama"
            },
            {
              "value": "subj_Art___Humor.AH_Humor",
              "label": "Books - Arts & entertainment - Humor"
            },
            {
              "value": "subj_Art___Humor.AH_Music",
              "label": "Books - Arts & entertainment - Music"
            },
            {
              "value": "subj_Art___Humor.AH_Performing_Arts",
              "label": "Books - Arts & entertainment - Performing Arts"
            },
            {
              "value": "coll_1204",
              "label": "Books - Biographies & memoirs"
            },
            {
              "value": "subj_Biography___Autobiography.General",
              "label": "Books - Biographies & memoirs - General"
            },
            {
              "value": "subj_Biography___Autobiography.Adventurers___Explorers",
              "label": "Books - Biographies & memoirs - Adventurers & Explorers"
            },
            {
              "value": "subj_Biography___Autobiography.Business",
              "label": "Books - Biographies & memoirs - Business"
            },
            {
              "value": "subj_Biography___Autobiography.Composers___Musicians",
              "label": "Books - Biographies & memoirs - Composers & musicians"
            },
            {
              "value": "subj_Biography___Autobiography.Criminals___Outlaws",
              "label": "Books - Biographies & memoirs - Criminals & outlaws"
            },
            {
              "value": "subj_Biography___Autobiography.Cultural_Heritage",
              "label": "Books - Biographies & memoirs - Cultural heritage"
            },
            {
              "value": "subj_Biography___Autobiography.Entertainment___Performing_Arts",
              "label": "Books - Biographies & memoirs - Entertainment & performing arts"
            },
            {
              "value": "subj_Biography___Autobiography.Historical",
              "label": "Books - Biographies & memoirs - Historical"
            },
            {
              "value": "subj_Biography___Autobiography.Literary",
              "label": "Books - Biographies & memoirs - Literary"
            },
            {
              "value": "subj_Biography___Autobiography.Medical",
              "label": "Books - Biographies & memoirs - Medical"
            },
            {
              "value": "subj_Biography___Autobiography.Military",
              "label": "Books - Biographies & memoirs - Military"
            },
            {
              "value": "subj_Biography___Autobiography.Personal_Memoirs",
              "label": "Books - Biographies & memoirs - Personal Memoirs"
            },
            {
              "value": "subj_Biography___Autobiography.Political",
              "label": "Books - Biographies & memoirs - Political"
            },
            {
              "value": "subj_Biography___Autobiography.Presidents___Heads_of_State",
              "label": "Books - Biographies & memoirs - Presidents & heads of state"
            },
            {
              "value": "subj_Biography___Autobiography.Religious",
              "label": "Books - Biographies & memoirs - Religious"
            },
            {
              "value": "subj_Biography___Autobiography.Rich___Famous",
              "label": "Books - Biographies & memoirs - Rich & famous"
            },
            {
              "value": "subj_Biography___Autobiography.Royalty",
              "label": "Books - Biographies & memoirs - Royalty"
            },
            {
              "value": "subj_Biography___Autobiography.Science___Technology",
              "label": "Books - Biographies & memoirs - Science & technology"
            },
            {
              "value": "subj_Biography___Autobiography.Sports",
              "label": "Books - Biographies & memoirs - Sports"
            },
            {
              "value": "subj_Biography___Autobiography.Women",
              "label": "Books - Biographies & memoirs - Women"
            },
            {
              "value": "coll_1668",
              "label": "Books - Books in Spanish"
            },
            {
              "value": "coll_1205",
              "label": "Books - Business & investing"
            },
            {
              "value": "subj_Business___Economics.General",
              "label": "Books - Business & investing - General"
            },
            {
              "value": "subj_Business___Economics.Accounting",
              "label": "Books - Business & investing - Accounting"
            },
            {
              "value": "subj_Business___Economics.Advertising___Promotion",
              "label": "Books - Business & investing - Advertising & promotion"
            },
            {
              "value": "subj_Business___Economics.Business_Communication",
              "label": "Books - Business & investing - Business Communication"
            },
            {
              "value": "subj_Business___Economics.Careers",
              "label": "Books - Business & investing - Careers"
            },
            {
              "value": "subj_Business___Economics.Decision-Making___Problem_Solving",
              "label": "Books - Business & investing - Decision-Making & problem solving"
            },
            {
              "value": "subj_Business___Economics.Development",
              "label": "Books - Business & investing - Development"
            },
            {
              "value": "subj_Business___Economics.E-Commerce",
              "label": "Books - Business & investing - E-Commerce"
            },
            {
              "value": "subj_Business___Economics.Economic_History",
              "label": "Books - Business & investing - Economic History"
            },
            {
              "value": "subj_Business___Economics.Economics",
              "label": "Books - Business & investing - Economics"
            },
            {
              "value": "subj_Business___Economics.Entrepreneurship",
              "label": "Books - Business & investing - Entrepreneurship"
            },
            {
              "value": "subj_Business___Economics.Finance",
              "label": "Books - Business & investing - Finance"
            },
            {
              "value": "subj_Business___Economics.Human_Resources___Personnel_Management",
              "label": "Books - Business & investing - Human resources & personnel management"
            },
            {
              "value": "subj_Business___Economics.Industries",
              "label": "Books - Business & investing - Industries"
            },
            {
              "value": "subj_Business___Economics.International",
              "label": "Books - Business & investing - International"
            },
            {
              "value": "subj_Business___Economics.Investments___Securities",
              "label": "Books - Business & investing - Investments & securities"
            },
            {
              "value": "subj_Business___Economics.Leadership",
              "label": "Books - Business & investing - Leadership"
            },
            {
              "value": "subj_Business___Economics.Management",
              "label": "Books - Business & investing - Management"
            },
            {
              "value": "subj_Business___Economics.Management_Science",
              "label": "Books - Business & investing - Management Science"
            },
            {
              "value": "subj_Business___Economics.Marketing",
              "label": "Books - Business & investing - Marketing"
            },
            {
              "value": "subj_Business___Economics.Motivational",
              "label": "Books - Business & investing - Motivational"
            },
            {
              "value": "subj_Business___Economics.Organizational_Behavior",
              "label": "Books - Business & investing - Organizational Behavior"
            },
            {
              "value": "subj_Business___Economics.Personal_Finance",
              "label": "Books - Business & investing - Personal Finance"
            },
            {
              "value": "subj_Business___Economics.Real_Estate",
              "label": "Books - Business & investing - Real Estate"
            },
            {
              "value": "subj_Business___Economics.Sales___Selling",
              "label": "Books - Business & investing - Sales & selling"
            },
            {
              "value": "subj_Business___Economics.Skills",
              "label": "Books - Business & investing - Skills"
            },
            {
              "value": "subj_Business___Economics.Small_Business",
              "label": "Books - Business & investing - Small Business"
            },
            {
              "value": "subj_Business___Economics.Strategic_Planning",
              "label": "Books - Business & investing - Strategic Planning"
            },
            {
              "value": "subj_Business___Economics.Time_Management",
              "label": "Books - Business & investing - Time Management"
            },
            {
              "value": "subj_Business___Economics.Workplace_Culture",
              "label": "Books - Business & investing - Workplace Culture"
            },
            {
              "value": "coll_1207",
              "label": "Books - Computers & technology"
            },
            {
              "value": "subj_Computers.General",
              "label": "Books - Computers & technology - General"
            },
            {
              "value": "subj_Computers.Desktop_Applications",
              "label": "Books - Computers & technology - Desktop Applications"
            },
            {
              "value": "subj_Computers.Electronic_Publishing",
              "label": "Books - Computers & technology - Electronic Publishing"
            },
            {
              "value": "subj_Computers.Enterprise_Applications",
              "label": "Books - Computers & technology - Enterprise Applications"
            },
            {
              "value": "subj_Computers.Hardware",
              "label": "Books - Computers & technology - Hardware"
            },
            {
              "value": "subj_Computers.Internet",
              "label": "Books - Computers & technology - Internet"
            },
            {
              "value": "subj_Computers.Networking",
              "label": "Books - Computers & technology - Networking"
            },
            {
              "value": "subj_Computers.Operating_Systems",
              "label": "Books - Computers & technology - Operating Systems"
            },
            {
              "value": "subj_Computers.Programming",
              "label": "Books - Computers & technology - Programming"
            },
            {
              "value": "subj_Computers.Programming_Languages",
              "label": "Books - Computers & technology - Programming Languages"
            },
            {
              "value": "subj_Computers.Security",
              "label": "Books - Computers & technology - Security"
            },
            {
              "value": "subj_Computers.Software_Development___Engineering",
              "label": "Books - Computers & technology - Software development & engineering"
            },
            {
              "value": "subj_Computers.Systems_Architecture",
              "label": "Books - Computers & technology - Systems Architecture"
            },
            {
              "value": "subj_Computers.Web",
              "label": "Books - Computers & technology - Web"
            },
            {
              "value": "coll_1208",
              "label": "Books - Cooking, food & wine"
            },
            {
              "value": "subj_Cooking.General",
              "label": "Books - Cooking, food & wine - General"
            },
            {
              "value": "subj_Cooking.Beverages",
              "label": "Books - Cooking, food & wine - Beverages"
            },
            {
              "value": "subj_Cooking.Courses___Dishes",
              "label": "Books - Cooking, food & wine - Courses & dishes"
            },
            {
              "value": "subj_Cooking.Health___Healing",
              "label": "Books - Cooking, food & wine - Health & healing"
            },
            {
              "value": "subj_Cooking.Methods",
              "label": "Books - Cooking, food & wine - Methods"
            },
            {
              "value": "subj_Cooking.Regional___Ethnic",
              "label": "Books - Cooking, food & wine - Regional & Ethnic"
            },
            {
              "value": "subj_Cooking.Specific_Ingredients",
              "label": "Books - Cooking, food & wine - Specific Ingredients"
            },
            {
              "value": "subj_Cooking.Tablesetting",
              "label": "Books - Cooking, food & wine - Tablesetting"
            },
            {
              "value": "subj_Cooking.Vegetarian___Vegan",
              "label": "Books - Cooking, food & wine - Vegetarian & Vegan"
            },
            {
              "value": "coll_1670",
              "label": "Books - Education"
            },
            {
              "value": "subj_Education.E_General",
              "label": "Books - Education - General"
            },
            {
              "value": "subj_Education.English_as_a_Second_Language",
              "label": "Books - Education - English as a second language"
            },
            {
              "value": "subj_Education.Higher",
              "label": "Books - Education - Higher"
            },
            {
              "value": "subj_Education.Teaching_Methods___Materials",
              "label": "Books - Education - Teaching methods & materials"
            },
            {
              "value": "coll_1261",
              "label": "Books - Engineering"
            },
            {
              "value": "subj_Technology___Engineering.General",
              "label": "Books - Engineering - General"
            },
            {
              "value": "subj_Technology___Engineering.Agriculture",
              "label": "Books - Engineering - Agriculture"
            },
            {
              "value": "subj_Technology___Engineering.Electronics",
              "label": "Books - Engineering - Electronics"
            },
            {
              "value": "subj_Technology___Engineering.Industrial_Technology",
              "label": "Books - Engineering - Industrial Technology"
            },
            {
              "value": "subj_Technology___Engineering.Military_Science",
              "label": "Books - Engineering - Military Science"
            },
            {
              "value": "subj_Technology___Engineering.Mobile___Wireless_Communications",
              "label": "Books - Engineering - Mobile & wireless communications"
            },
            {
              "value": "subj_Technology___Engineering.Nanotechnology___MEMS",
              "label": "Books - Engineering - Nanotechnology & MEMS"
            },
            {
              "value": "subj_Technology___Engineering.Remote_Sensing___Geographic_Information_Systems",
              "label": "Books - Engineering - Remote sensing & geographic information systems"
            },
            {
              "value": "coll_1200",
              "label": "Books - Fiction & literature"
            },
            {
              "value": "subj_Fiction.General",
              "label": "Books - Fiction & literature - General"
            },
            {
              "value": "subj_Fiction.Action___Adventure",
              "label": "Books - Fiction & literature - Action & adventure"
            },
            {
              "value": "subj_Fiction.African_American",
              "label": "Books - Fiction & literature - African American"
            },
            {
              "value": "subj_Fiction.Alternative_History",
              "label": "Books - Fiction & literature - Alternative History"
            },
            {
              "value": "subj_Fiction.Anthologies__multiple_authors_",
              "label": "Books - Fiction & literature - Anthologies (multiple authors)"
            },
            {
              "value": "subj_Fiction.Biographical",
              "label": "Books - Fiction & literature - Biographical"
            },
            {
              "value": "subj_Fiction.Christian",
              "label": "Books - Fiction & literature - Christian"
            },
            {
              "value": "subj_Fiction.Classics",
              "label": "Books - Fiction & literature - Classics"
            },
            {
              "value": "subj_Fiction.Coming_of_Age",
              "label": "Books - Fiction & literature - Coming of Age"
            },
            {
              "value": "subj_Fiction.Contemporary_Women",
              "label": "Books - Fiction & literature - Contemporary Women"
            },
            {
              "value": "subj_Fiction.Crime",
              "label": "Books - Fiction & literature - Crime"
            },
            {
              "value": "subj_Fiction.Cultural_Heritage",
              "label": "Books - Fiction & literature - Cultural Heritage"
            },
            {
              "value": "subj_Fiction.Erotica",
              "label": "Books - Fiction & literature - Erotica"
            },
            {
              "value": "subj_Fiction.Fairy_Tales__Folk_Tales__Legends___Mythology",
              "label": "Books - Fiction & literature - Fairy tales, folk tales, legends & mythology"
            },
            {
              "value": "subj_Fiction.Family_Life",
              "label": "Books - Fiction & literature - Family Life"
            },
            {
              "value": "subj_Fiction.Fantasy",
              "label": "Books - Fiction & literature - Fantasy"
            },
            {
              "value": "subj_Fiction.Gay",
              "label": "Books - Fiction & literature - Gay"
            },
            {
              "value": "subj_Fiction.Ghost",
              "label": "Books - Fiction & literature - Ghost"
            },
            {
              "value": "subj_Fiction.Historical",
              "label": "Books - Fiction & literature - Historical"
            },
            {
              "value": "subj_Fiction.Horror",
              "label": "Books - Fiction & literature - Horror"
            },
            {
              "value": "subj_Fiction.Humorous",
              "label": "Books - Fiction & literature - Humorous"
            },
            {
              "value": "subj_Fiction.Legal",
              "label": "Books - Fiction & literature - Legal"
            },
            {
              "value": "subj_Fiction.Lesbian",
              "label": "Books - Fiction & literature - Lesbian"
            },
            {
              "value": "subj_Fiction.Literary",
              "label": "Books - Fiction & literature - Literary"
            },
            {
              "value": "subj_Fiction.Media_Tie-In",
              "label": "Books - Fiction & literature - Media Tie-In"
            },
            {
              "value": "subj_Fiction.Medical",
              "label": "Books - Fiction & literature - Medical"
            },
            {
              "value": "subj_Fiction.Men_s_Adventure",
              "label": "Books - Fiction & literature - Men's Adventure"
            },
            {
              "value": "subj_Fiction.Mystery___Detective",
              "label": "Books - Fiction & literature - Mystery & Detective"
            },
            {
              "value": "subj_Fiction.Occult___Supernatural",
              "label": "Books - Fiction & literature - Occult & Supernatural"
            },
            {
              "value": "subj_Fiction.Political",
              "label": "Books - Fiction & literature - Political"
            },
            {
              "value": "subj_Fiction.Psychological",
              "label": "Books - Fiction & literature - Psychological"
            },
            {
              "value": "subj_Fiction.Religious",
              "label": "Books - Fiction & literature - Religious"
            },
            {
              "value": "subj_Fiction.Romance",
              "label": "Books - Fiction & literature - Romance"
            },
            {
              "value": "subj_Fiction.Sagas",
              "label": "Books - Fiction & literature - Sagas"
            },
            {
              "value": "subj_Fiction.Satire",
              "label": "Books - Fiction & literature - Satire"
            },
            {
              "value": "subj_Fiction.Science_Fiction",
              "label": "Books - Fiction & literature - Science Fiction"
            },
            {
              "value": "subj_Fiction.Sea_Stories",
              "label": "Books - Fiction & literature - Sea Stories"
            },
            {
              "value": "subj_Fiction.Short_Stories__single_author_",
              "label": "Books - Fiction & literature - Short stories (single author)"
            },
            {
              "value": "subj_Fiction.Sports",
              "label": "Books - Fiction & literature - Sports"
            },
            {
              "value": "subj_Fiction.Thrillers",
              "label": "Books - Fiction & literature - Thrillers"
            },
            {
              "value": "subj_Fiction.War___Military",
              "label": "Books - Fiction & literature - War & Military"
            },
            {
              "value": "subj_Fiction.Westerns",
              "label": "Books - Fiction & literature - Westerns"
            },
            {
              "value": "coll_1605",
              "label": "Books - Health, mind & body"
            },
            {
              "value": "subj_Health__Mind___Body.HMB_General",
              "label": "Books - Health, mind & body - General"
            },
            {
              "value": "subj_Health__Mind___Body.Alternative_Therapies",
              "label": "Books - Health, mind & body - Alternative Therapies"
            },
            {
              "value": "subj_Health__Mind___Body.Astrology",
              "label": "Books - Health, mind & body - Astrology"
            },
            {
              "value": "subj_Health__Mind___Body.Beauty___Grooming",
              "label": "Books - Health, mind & body - Beauty & Grooming"
            },
            {
              "value": "subj_Health__Mind___Body.Creativity",
              "label": "Books - Health, mind & body - Creativity"
            },
            {
              "value": "subj_Health__Mind___Body.Death__Grief__Bereavement",
              "label": "Books - Health, mind & body - Death, grief, bereavement"
            },
            {
              "value": "subj_Health__Mind___Body.Exercise",
              "label": "Books - Health, mind & body - Exercise"
            },
            {
              "value": "subj_Health__Mind___Body.Healing",
              "label": "Books - Health, mind & body - Healing"
            },
            {
              "value": "subj_Health__Mind___Body.Healthy_Living",
              "label": "Books - Health, mind & body - Healthy Living"
            },
            {
              "value": "subj_Health__Mind___Body.Motivational___Inspirational",
              "label": "Books - Health, mind & body - Motivational & inspirational"
            },
            {
              "value": "subj_Health__Mind___Body.Personal_Growth",
              "label": "Books - Health, mind & body - Personal Growth"
            },
            {
              "value": "subj_Health__Mind___Body.Spirituality",
              "label": "Books - Health, mind & body - Spirituality"
            },
            {
              "value": "subj_Health__Mind___Body.Yoga",
              "label": "Books - Health, mind & body - Yoga"
            },
            {
              "value": "coll_1209",
              "label": "Books - History"
            },
            {
              "value": "subj_History.General",
              "label": "Books - History - General"
            },
            {
              "value": "subj_History.Africa",
              "label": "Books - History - Africa"
            },
            {
              "value": "subj_History.Americas__North__Central__South__West_Indies_",
              "label": "Books - History - Americas (north, central, south, West Indies)"
            },
            {
              "value": "subj_History.Ancient",
              "label": "Books - History - Ancient"
            },
            {
              "value": "subj_History.Asia",
              "label": "Books - History - Asia"
            },
            {
              "value": "subj_History.Europe",
              "label": "Books - History - Europe"
            },
            {
              "value": "subj_History.Holocaust",
              "label": "Books - History - Holocaust"
            },
            {
              "value": "subj_History.Latin_America",
              "label": "Books - History - Latin America"
            },
            {
              "value": "subj_History.Medieval",
              "label": "Books - History - Medieval"
            },
            {
              "value": "subj_History.Middle_East",
              "label": "Books - History - Middle East"
            },
            {
              "value": "subj_History.Military",
              "label": "Books - History - Military"
            },
            {
              "value": "subj_History.Modern",
              "label": "Books - History - Modern"
            },
            {
              "value": "subj_History.Native_American",
              "label": "Books - History - Native American"
            },
            {
              "value": "subj_History.Revolutionary",
              "label": "Books - History - Revolutionary"
            },
            {
              "value": "subj_History.Social_History",
              "label": "Books - History - Social History"
            },
            {
              "value": "subj_History.United_States",
              "label": "Books - History - United States"
            },
            {
              "value": "subj_History.World",
              "label": "Books - History - World"
            },
            {
              "value": "coll_1211",
              "label": "Books - Home & garden"
            },
            {
              "value": "subj_House___Home.HH_General",
              "label": "Books - Home & garden - General"
            },
            {
              "value": "subj_House___Home.Crocheting",
              "label": "Books - Home & garden - Crocheting"
            },
            {
              "value": "subj_House___Home.Do-It-Yourself",
              "label": "Books - Home & garden - Do-It-Yourself"
            },
            {
              "value": "subj_House___Home.Fruit",
              "label": "Books - Home & garden - Fruit"
            },
            {
              "value": "subj_House___Home.Furniture",
              "label": "Books - Home & garden - Furniture"
            },
            {
              "value": "subj_House___Home.Knitting",
              "label": "Books - Home & garden - Knitting"
            },
            {
              "value": "subj_House___Home.Models",
              "label": "Books - Home & garden - Models"
            },
            {
              "value": "subj_House___Home.Quilts___Quilting",
              "label": "Books - Home & garden - Quilts & Quilting"
            },
            {
              "value": "subj_House___Home.Sustainable_Living",
              "label": "Books - Home & garden - Sustainable Living"
            },
            {
              "value": "subj_House___Home.Woodwork",
              "label": "Books - Home & garden - Woodwork"
            },
            {
              "value": "coll_1667",
              "label": "Books - Law"
            },
            {
              "value": "subj_Law.General",
              "label": "Books - Law - General"
            },
            {
              "value": "subj_Law.Criminal_Law",
              "label": "Books - Law - Criminal Law"
            },
            {
              "value": "subj_Law.Emigration___Immigration",
              "label": "Books - Law - Emigration & Immigration"
            },
            {
              "value": "coll_1669",
              "label": "Books - Medicine"
            },
            {
              "value": "subj_Medical.General",
              "label": "Books - Medicine - General"
            },
            {
              "value": "subj_Medical.Cardiology",
              "label": "Books - Medicine - Cardiology"
            },
            {
              "value": "subj_Medical.Caregiving",
              "label": "Books - Medicine - Caregiving"
            },
            {
              "value": "subj_Medical.Family___General_Practice",
              "label": "Books - Medicine - Family & general practice"
            },
            {
              "value": "subj_Medical.Neuroscience",
              "label": "Books - Medicine - Neuroscience"
            },
            {
              "value": "subj_Medical.Nursing",
              "label": "Books - Medicine - Nursing"
            },
            {
              "value": "subj_Medical.Practice_Management___Reimbursement",
              "label": "Books - Medicine - Practice management & reimbursement"
            },
            {
              "value": "subj_Medical.Preventive_Medicine",
              "label": "Books - Medicine - Preventive Medicine"
            },
            {
              "value": "coll_1615",
              "label": "Books - Mystery & thrillers"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.General",
              "label": "Books - Mystery & thrillers - General"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.Hard-Boiled",
              "label": "Books - Mystery & thrillers - Hard-Boiled"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.Historical",
              "label": "Books - Mystery & thrillers - Historical"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.Police_Procedural",
              "label": "Books - Mystery & thrillers - Police Procedural"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.Suspense",
              "label": "Books - Mystery & thrillers - Suspense"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.Traditional_British",
              "label": "Books - Mystery & thrillers - Traditional British"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.True_Crime",
              "label": "Books - Mystery & thrillers - True Crime"
            },
            {
              "value": "subj_Fiction.Mystery___Detective.Women_Sleuths",
              "label": "Books - Mystery & thrillers - Women Sleuths"
            },
            {
              "value": "coll_1214",
              "label": "Books - Parenting & families"
            },
            {
              "value": "subj_Family___Relationships.General",
              "label": "Books - Parenting & families - General"
            },
            {
              "value": "subj_Family___Relationships.Abuse",
              "label": "Books - Parenting & families - Abuse"
            },
            {
              "value": "subj_Family___Relationships.Children_with_Special_Needs",
              "label": "Books - Parenting & families - Children with Special Needs"
            },
            {
              "value": "subj_Family___Relationships.Conflict_Resolution",
              "label": "Books - Parenting & families - Conflict Resolution"
            },
            {
              "value": "subj_Family___Relationships.Divorce___Separation",
              "label": "Books - Parenting & families - Divorce & Separation"
            },
            {
              "value": "subj_Family___Relationships.Family_Relationships",
              "label": "Books - Parenting & families - Family Relationships"
            },
            {
              "value": "subj_Family___Relationships.Interpersonal_Relations",
              "label": "Books - Parenting & families - Interpersonal Relations"
            },
            {
              "value": "subj_Family___Relationships.Life_Stages",
              "label": "Books - Parenting & families - Life Stages"
            },
            {
              "value": "subj_Family___Relationships.Love___Romance",
              "label": "Books - Parenting & families - Love & Romance"
            },
            {
              "value": "subj_Family___Relationships.Marriage",
              "label": "Books - Parenting & families - Marriage"
            },
            {
              "value": "subj_Family___Relationships.Parenting",
              "label": "Books - Parenting & families - Parenting"
            },
            {
              "value": "coll_1215",
              "label": "Books - Politics & current events"
            },
            {
              "value": "subj_Political_Science.General",
              "label": "Books - Politics & current events - General"
            },
            {
              "value": "subj_Political_Science.Essays",
              "label": "Books - Politics & current events - Essays"
            },
            {
              "value": "subj_Political_Science.History___Theory",
              "label": "Books - Politics & current events - History & Theory"
            },
            {
              "value": "subj_Political_Science.International_Relations",
              "label": "Books - Politics & current events - International Relations"
            },
            {
              "value": "subj_Political_Science.Political_Ideologies",
              "label": "Books - Politics & current events - Political Ideologies"
            },
            {
              "value": "subj_Political_Science.Political_Process",
              "label": "Books - Politics & current events - Political Process"
            },
            {
              "value": "subj_Political_Science.Public_Affairs___Administration",
              "label": "Books - Politics & current events - Public Affairs & Administration"
            },
            {
              "value": "subj_Political_Science.Public_Policy",
              "label": "Books - Politics & current events - Public Policy"
            },
            {
              "value": "coll_1217",
              "label": "Books - Religion & spirituality"
            },
            {
              "value": "subj_Religion.General",
              "label": "Books - Religion & spirituality - General"
            },
            {
              "value": "subj_Religion.Biblical_Commentary",
              "label": "Books - Religion & spirituality - Biblical Commentary"
            },
            {
              "value": "subj_Religion.Biblical_Criticism___Interpretation",
              "label": "Books - Religion & spirituality - Biblical Criticism & Interpretation"
            },
            {
              "value": "subj_Religion.Biblical_Reference",
              "label": "Books - Religion & spirituality - Biblical Reference"
            },
            {
              "value": "subj_Religion.Biblical_Studies",
              "label": "Books - Religion & spirituality - Biblical Studies"
            },
            {
              "value": "subj_Religion.Buddhism",
              "label": "Books - Religion & spirituality - Buddhism"
            },
            {
              "value": "subj_Religion.Christian_Church",
              "label": "Books - Religion & spirituality - Christian Church"
            },
            {
              "value": "subj_Religion.Christian_Education",
              "label": "Books - Religion & spirituality - Christian Education"
            },
            {
              "value": "subj_Religion.Christian_Life",
              "label": "Books - Religion & spirituality - Christian Life"
            },
            {
              "value": "subj_Religion.Christian_Ministry",
              "label": "Books - Religion & spirituality - Christian Ministry"
            },
            {
              "value": "subj_Religion.Christian_Rituals___Practice",
              "label": "Books - Religion & spirituality - Christian Rituals & Practice"
            },
            {
              "value": "subj_Religion.Christian_Theology",
              "label": "Books - Religion & spirituality - Christian Theology"
            },
            {
              "value": "subj_Religion.Christianity",
              "label": "Books - Religion & spirituality - Christianity"
            },
            {
              "value": "subj_Religion.Comparative_Religion",
              "label": "Books - Religion & spirituality - Comparative Religion"
            },
            {
              "value": "subj_Religion.Counseling",
              "label": "Books - Religion & spirituality - Counseling"
            },
            {
              "value": "subj_Religion.Eastern",
              "label": "Books - Religion & spirituality - Eastern"
            },
            {
              "value": "subj_Religion.Hinduism",
              "label": "Books - Religion & spirituality - Hinduism"
            },
            {
              "value": "subj_Religion.History",
              "label": "Books - Religion & spirituality - History"
            },
            {
              "value": "subj_Religion.Inspirational",
              "label": "Books - Religion & spirituality - Inspirational"
            },
            {
              "value": "subj_Religion.Judaism",
              "label": "Books - Religion & spirituality - Judaism"
            },
            {
              "value": "subj_Religion.Philosophy",
              "label": "Books - Religion & spirituality - Philosophy"
            },
            {
              "value": "subj_Religion.Prayer",
              "label": "Books - Religion & spirituality - Prayer"
            },
            {
              "value": "subj_Religion.Sikhism",
              "label": "Books - Religion & spirituality - Sikhism"
            },
            {
              "value": "subj_Religion.Spirituality",
              "label": "Books - Religion & spirituality - Spirituality"
            },
            {
              "value": "subj_Religion.Theology",
              "label": "Books - Religion & spirituality - Theology"
            },
            {
              "value": "coll_1218",
              "label": "Books - Romance"
            },
            {
              "value": "subj_Fiction.Romance.General",
              "label": "Books - Romance - General"
            },
            {
              "value": "subj_Fiction.Romance.Contemporary",
              "label": "Books - Romance - Contemporary"
            },
            {
              "value": "subj_Fiction.Romance.Fantasy",
              "label": "Books - Romance - Fantasy"
            },
            {
              "value": "subj_Fiction.Romance.Historical",
              "label": "Books - Romance - Historical"
            },
            {
              "value": "subj_Fiction.Romance.Paranormal",
              "label": "Books - Romance - Paranormal"
            },
            {
              "value": "subj_Fiction.Romance.Suspense",
              "label": "Books - Romance - Suspense"
            },
            {
              "value": "subj_Fiction.Romance.Time_Travel",
              "label": "Books - Romance - Time Travel"
            },
            {
              "value": "subj_Fiction.Romance.Western",
              "label": "Books - Romance - Western"
            },
            {
              "value": "coll_1671",
              "label": "Books - Science & math"
            },
            {
              "value": "coll_1604",
              "label": "Books - Science fiction & fantasy"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.SFF_General",
              "label": "Books - Science fiction & fantasy - General"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.Contemporary",
              "label": "Books - Science fiction & fantasy - Contemporary"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.Epic",
              "label": "Books - Science fiction & fantasy - Epic"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.SFF_Historical",
              "label": "Books - Science fiction & fantasy - Historical"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.Military",
              "label": "Books - Science fiction & fantasy - Military"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.Paranormal",
              "label": "Books - Science fiction & fantasy - Paranormal"
            },
            {
              "value": "subj_Science_Fiction___Fantasy.Space_Opera",
              "label": "Books - Science fiction & fantasy - Space Opera"
            },
            {
              "value": "coll_1222",
              "label": "Books - Sports"
            },
            {
              "value": "subj_Sports___Recreation.General",
              "label": "Books - Sports - General"
            },
            {
              "value": "subj_Sports___Recreation.Baseball",
              "label": "Books - Sports - Baseball"
            },
            {
              "value": "subj_Sports___Recreation.Basketball",
              "label": "Books - Sports - Basketball"
            },
            {
              "value": "subj_Sports___Recreation.Bodybuilding___Weight_Training",
              "label": "Books - Sports - Bodybuilding & weight training"
            },
            {
              "value": "subj_Sports___Recreation.Coaching",
              "label": "Books - Sports - Coaching"
            },
            {
              "value": "subj_Sports___Recreation.Essays",
              "label": "Books - Sports - Essays"
            },
            {
              "value": "subj_Sports___Recreation.Extreme_Sports",
              "label": "Books - Sports - Extreme Sports"
            },
            {
              "value": "subj_Sports___Recreation.Fishing",
              "label": "Books - Sports - Fishing"
            },
            {
              "value": "subj_Sports___Recreation.Football",
              "label": "Books - Sports - Football"
            },
            {
              "value": "subj_Sports___Recreation.Golf",
              "label": "Books - Sports - Golf"
            },
            {
              "value": "subj_Sports___Recreation.Hiking",
              "label": "Books - Sports - Hiking"
            },
            {
              "value": "subj_Sports___Recreation.History",
              "label": "Books - Sports - History"
            },
            {
              "value": "coll_1673",
              "label": "Books - Textbooks"
            },
            {
              "value": "coll_1224",
              "label": "Books - Travel"
            },
            {
              "value": "subj_Travel.General",
              "label": "Books - Travel - General"
            },
            {
              "value": "subj_Travel.Essays___Travelogues",
              "label": "Books - Travel - Essays & Travelogues"
            },
            {
              "value": "subj_Travel.Europe",
              "label": "Books - Travel - Europe"
            },
            {
              "value": "subj_Travel.Special_Interest",
              "label": "Books - Travel - Special Interest"
            },
            {
              "value": "subj_Travel.United_States",
              "label": "Books - Travel - United States"
            },
            {
              "value": "coll_1672",
              "label": "Books - Young adult"
            },
            {
              "value": "audiobooks",
              "label": "Audiobooks - undefined"
            },
            {
              "value": "audiobooks_coll_1665",
              "label": "Audiobooks - Arts & entertainment"
            },
            {
              "value": "audiobooks_subj_Arts___Entertainment.Celebrity_Bios",
              "label": "Audiobooks - Arts & entertainment - Celebrity Bios"
            },
            {
              "value": "audiobooks_subj_Arts___Entertainment.Humor",
              "label": "Audiobooks - Arts & entertainment - Humor"
            },
            {
              "value": "audiobooks_subj_Arts___Entertainment.TV___Film",
              "label": "Audiobooks - Arts & entertainment - TV & Film"
            },
            {
              "value": "audiobooks_coll_1204",
              "label": "Audiobooks - Biographies & memoirs"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Artists__Writers____Musicians",
              "label": "Audiobooks - Biographies & memoirs - Artists, Writers, & Musicians"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Business_Leaders",
              "label": "Audiobooks - Biographies & memoirs - Business Leaders"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Celebrities",
              "label": "Audiobooks - Biographies & memoirs - Celebrities"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Criminal",
              "label": "Audiobooks - Biographies & memoirs - Criminal"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Personal_Memoirs",
              "label": "Audiobooks - Biographies & memoirs - Personal Memoirs"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Political_Figures",
              "label": "Audiobooks - Biographies & memoirs - Political Figures"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Religious_Figures",
              "label": "Audiobooks - Biographies & memoirs - Religious Figures"
            },
            {
              "value": "audiobooks_subj_Biographies___Memoirs.Science___Technology_Leaders",
              "label": "Audiobooks - Biographies & memoirs - Science & Technology Leaders"
            },
            {
              "value": "audiobooks_coll_1205",
              "label": "Audiobooks - Business & investing"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Career_Skills",
              "label": "Audiobooks - Business & investing - Career Skills"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Commerce___Economy",
              "label": "Audiobooks - Business & investing - Commerce & Economy"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Leadership",
              "label": "Audiobooks - Business & investing - Leadership"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Management",
              "label": "Audiobooks - Business & investing - Management"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Marketing",
              "label": "Audiobooks - Business & investing - Marketing"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Personal_Finance___Investing",
              "label": "Audiobooks - Business & investing - Personal Finance & Investing"
            },
            {
              "value": "audiobooks_subj_Business___Investing.Sales",
              "label": "Audiobooks - Business & investing - Sales"
            },
            {
              "value": "audiobooks_coll_1689",
              "label": "Audiobooks - Children's audiobooks"
            },
            {
              "value": "audiobooks_coll_1200",
              "label": "Audiobooks - Fiction & literature"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.African_American",
              "label": "Audiobooks - Fiction & literature - African American"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Classics",
              "label": "Audiobooks - Fiction & literature - Classics"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Historical",
              "label": "Audiobooks - Fiction & literature - Historical"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Horror",
              "label": "Audiobooks - Fiction & literature - Horror"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Humor",
              "label": "Audiobooks - Fiction & literature - Humor"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Literary",
              "label": "Audiobooks - Fiction & literature - Literary"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Media_Tie-In",
              "label": "Audiobooks - Fiction & literature - Media Tie-In"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Religion___Spirituality",
              "label": "Audiobooks - Fiction & literature - Religion & Spirituality"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Short_Stories___Anthologies",
              "label": "Audiobooks - Fiction & literature - Short Stories & Anthologies"
            },
            {
              "value": "audiobooks_subj_Fiction___Literature.Western",
              "label": "Audiobooks - Fiction & literature - Western"
            },
            {
              "value": "audiobooks_coll_1605",
              "label": "Audiobooks - Health, mind & body"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Alternative_Therapies",
              "label": "Audiobooks - Health, mind & body - Alternative Therapies"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Astrology",
              "label": "Audiobooks - Health, mind & body - Astrology"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Beauty___Grooming",
              "label": "Audiobooks - Health, mind & body - Beauty & Grooming"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Creativity",
              "label": "Audiobooks - Health, mind & body - Creativity"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Exercise",
              "label": "Audiobooks - Health, mind & body - Exercise"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Healing",
              "label": "Audiobooks - Health, mind & body - Healing"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Healthy_Living",
              "label": "Audiobooks - Health, mind & body - Healthy Living"
            },
            {
              "value": "audiobooks_subj_Health__Mind___Body.Spirituality",
              "label": "Audiobooks - Health, mind & body - Spirituality"
            },
            {
              "value": "audiobooks_coll_1209",
              "label": "Audiobooks - History"
            },
            {
              "value": "audiobooks_subj_History.20th_Century",
              "label": "Audiobooks - History - 20th Century"
            },
            {
              "value": "audiobooks_subj_History.21st_Century",
              "label": "Audiobooks - History - 21st Century"
            },
            {
              "value": "audiobooks_subj_History.American",
              "label": "Audiobooks - History - American"
            },
            {
              "value": "audiobooks_subj_History.Ancient",
              "label": "Audiobooks - History - Ancient"
            },
            {
              "value": "audiobooks_subj_History.European",
              "label": "Audiobooks - History - European"
            },
            {
              "value": "audiobooks_subj_History.Kids___Young_Adults",
              "label": "Audiobooks - History - Kids & Young Adults"
            },
            {
              "value": "audiobooks_subj_History.Military",
              "label": "Audiobooks - History - Military"
            },
            {
              "value": "audiobooks_subj_History.World",
              "label": "Audiobooks - History - World"
            },
            {
              "value": "audiobooks_coll_1676",
              "label": "Audiobooks - Language instruction"
            },
            {
              "value": "audiobooks_subj_Language_Instruction.French",
              "label": "Audiobooks - Language instruction - French"
            },
            {
              "value": "audiobooks_subj_Language_Instruction.German",
              "label": "Audiobooks - Language instruction - German"
            },
            {
              "value": "audiobooks_subj_Language_Instruction.Italian",
              "label": "Audiobooks - Language instruction - Italian"
            },
            {
              "value": "audiobooks_subj_Language_Instruction.Spanish",
              "label": "Audiobooks - Language instruction - Spanish"
            },
            {
              "value": "audiobooks_coll_1615",
              "label": "Audiobooks - Mystery & thrillers"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Cozy_Mysteries",
              "label": "Audiobooks - Mystery & thrillers - Cozy Mysteries"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Espionage",
              "label": "Audiobooks - Mystery & thrillers - Espionage"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Historical",
              "label": "Audiobooks - Mystery & thrillers - Historical"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.International_Mystery___Crime",
              "label": "Audiobooks - Mystery & thrillers - International Mystery & Crime"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Legal_Thrillers",
              "label": "Audiobooks - Mystery & thrillers - Legal Thrillers"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Medical_Thrillers",
              "label": "Audiobooks - Mystery & thrillers - Medical Thrillers"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Military",
              "label": "Audiobooks - Mystery & thrillers - Military"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Noir",
              "label": "Audiobooks - Mystery & thrillers - Noir"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Police_Procedural",
              "label": "Audiobooks - Mystery & thrillers - Police Procedural"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Political",
              "label": "Audiobooks - Mystery & thrillers - Political"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Psychological",
              "label": "Audiobooks - Mystery & thrillers - Psychological"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.Suspense",
              "label": "Audiobooks - Mystery & thrillers - Suspense"
            },
            {
              "value": "audiobooks_subj_Mystery___Thrillers.True_Crime",
              "label": "Audiobooks - Mystery & thrillers - True Crime"
            },
            {
              "value": "audiobooks_coll_1217",
              "label": "Audiobooks - Religion & spirituality"
            },
            {
              "value": "audiobooks_subj_Religion___Spirituality.Buddhism___Eastern_Religions",
              "label": "Audiobooks - Religion & spirituality - Buddhism & Eastern Religions"
            },
            {
              "value": "audiobooks_subj_Religion___Spirituality.Christianity",
              "label": "Audiobooks - Religion & spirituality - Christianity"
            },
            {
              "value": "audiobooks_subj_Religion___Spirituality.Islam",
              "label": "Audiobooks - Religion & spirituality - Islam"
            },
            {
              "value": "audiobooks_subj_Religion___Spirituality.Judaism",
              "label": "Audiobooks - Religion & spirituality - Judaism"
            },
            {
              "value": "audiobooks_subj_Religion___Spirituality.Religious_Thought",
              "label": "Audiobooks - Religion & spirituality - Religious Thought"
            },
            {
              "value": "audiobooks_subj_Religion___Spirituality.Sermons___Ministries",
              "label": "Audiobooks - Religion & spirituality - Sermons & Ministries"
            },
            {
              "value": "audiobooks_coll_1716",
              "label": "Audiobooks - Romance"
            },
            {
              "value": "audiobooks_subj_Romance_US.Christian_Romance",
              "label": "Audiobooks - Romance - Christian Romance"
            },
            {
              "value": "audiobooks_subj_Romance_US.Contemporary",
              "label": "Audiobooks - Romance - Contemporary"
            },
            {
              "value": "audiobooks_subj_Romance_US.Erotica",
              "label": "Audiobooks - Romance - Erotica"
            },
            {
              "value": "audiobooks_subj_Romance_US.Fantasy",
              "label": "Audiobooks - Romance - Fantasy"
            },
            {
              "value": "audiobooks_subj_Romance_US.Historical",
              "label": "Audiobooks - Romance - Historical"
            },
            {
              "value": "audiobooks_subj_Romance_US.LGBT",
              "label": "Audiobooks - Romance - LGBT"
            },
            {
              "value": "audiobooks_subj_Romance_US.Paranormal",
              "label": "Audiobooks - Romance - Paranormal"
            },
            {
              "value": "audiobooks_subj_Romance_US.Regency",
              "label": "Audiobooks - Romance - Regency"
            },
            {
              "value": "audiobooks_subj_Romance_US.Romantic_Comedy",
              "label": "Audiobooks - Romance - Romantic Comedy"
            },
            {
              "value": "audiobooks_subj_Romance_US.Science_Fiction___Fantasy",
              "label": "Audiobooks - Romance - Science Fiction & Fantasy"
            },
            {
              "value": "audiobooks_subj_Romance_US.Sports",
              "label": "Audiobooks - Romance - Sports"
            },
            {
              "value": "audiobooks_subj_Romance_US.Suspense",
              "label": "Audiobooks - Romance - Suspense"
            },
            {
              "value": "audiobooks_subj_Romance_US.Western",
              "label": "Audiobooks - Romance - Western"
            },
            {
              "value": "audiobooks_subj_Romance_US.Young_Adult",
              "label": "Audiobooks - Romance - Young Adult"
            },
            {
              "value": "audiobooks_coll_1219",
              "label": "Audiobooks - Science & technology"
            },
            {
              "value": "audiobooks_subj_Science___Technology.Astronomy",
              "label": "Audiobooks - Science & technology - Astronomy"
            },
            {
              "value": "audiobooks_subj_Science___Technology.Biology",
              "label": "Audiobooks - Science & technology - Biology"
            },
            {
              "value": "audiobooks_subj_Science___Technology.Environment",
              "label": "Audiobooks - Science & technology - Environment"
            },
            {
              "value": "audiobooks_subj_Science___Technology.Physics",
              "label": "Audiobooks - Science & technology - Physics"
            },
            {
              "value": "audiobooks_coll_1604",
              "label": "Audiobooks - Science fiction & fantasy"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Alternate_History",
              "label": "Audiobooks - Science fiction & fantasy - Alternate History"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Contemporary",
              "label": "Audiobooks - Science fiction & fantasy - Contemporary"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Dark_Fantasy",
              "label": "Audiobooks - Science fiction & fantasy - Dark Fantasy"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Fantasy__Epic",
              "label": "Audiobooks - Science fiction & fantasy - Fantasy: Epic"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Military_Sci-Fi",
              "label": "Audiobooks - Science fiction & fantasy - Military Sci-Fi"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Paranormal",
              "label": "Audiobooks - Science fiction & fantasy - Paranormal"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Post_Apocalyptic",
              "label": "Audiobooks - Science fiction & fantasy - Post Apocalyptic"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Short_Stories___Anthologies",
              "label": "Audiobooks - Science fiction & fantasy - Short Stories & Anthologies"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Space_Opera",
              "label": "Audiobooks - Science fiction & fantasy - Space Opera"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Steampunk",
              "label": "Audiobooks - Science fiction & fantasy - Steampunk"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Superheroes",
              "label": "Audiobooks - Science fiction & fantasy - Superheroes"
            },
            {
              "value": "audiobooks_subj_Science_Fiction___Fantasy.Time_Travel",
              "label": "Audiobooks - Science fiction & fantasy - Time Travel"
            },
            {
              "value": "audiobooks_coll_1545",
              "label": "Audiobooks - Self-help"
            },
            {
              "value": "audiobooks_subj_Self-Help.Communication_Skills",
              "label": "Audiobooks - Self-help - Communication Skills"
            },
            {
              "value": "audiobooks_subj_Self-Help.How-To",
              "label": "Audiobooks - Self-help - How-To"
            },
            {
              "value": "audiobooks_subj_Self-Help.Hypnosis",
              "label": "Audiobooks - Self-help - Hypnosis"
            },
            {
              "value": "audiobooks_subj_Self-Help.Meditation",
              "label": "Audiobooks - Self-help - Meditation"
            },
            {
              "value": "audiobooks_subj_Self-Help.Motivation___Inspiration",
              "label": "Audiobooks - Self-help - Motivation & Inspiration"
            },
            {
              "value": "audiobooks_subj_Self-Help.Parenting",
              "label": "Audiobooks - Self-help - Parenting"
            },
            {
              "value": "audiobooks_subj_Self-Help.Personal_Finance",
              "label": "Audiobooks - Self-help - Personal_Finance"
            },
            {
              "value": "audiobooks_subj_Self-Help.Relationships",
              "label": "Audiobooks - Self-help - Relationships"
            },
            {
              "value": "audiobooks_subj_Self-Help.Sexuality",
              "label": "Audiobooks - Self-help - Sexuality"
            },
            {
              "value": "audiobooks_coll_1222",
              "label": "Audiobooks - Sports"
            },
            {
              "value": "audiobooks_subj_Sports.Baseball",
              "label": "Audiobooks - Sports - Baseball"
            },
            {
              "value": "audiobooks_subj_Sports.Basketball",
              "label": "Audiobooks - Sports - Basketball"
            },
            {
              "value": "audiobooks_subj_Sports.Football",
              "label": "Audiobooks - Sports - Football"
            },
            {
              "value": "audiobooks_subj_Sports.Golf",
              "label": "Audiobooks - Sports - Golf"
            },
            {
              "value": "audiobooks_coll_1224",
              "label": "Audiobooks - Travel"
            },
            {
              "value": "audiobooks_subj_Travel.Adventure___Exploration",
              "label": "Audiobooks - Travel - Adventure & Exploration"
            },
            {
              "value": "audiobooks_subj_Travel.Essays___Travelogues",
              "label": "Audiobooks - Travel - Essays & Travelogues"
            },
            {
              "value": "audiobooks_subj_Travel.Guided_Tours",
              "label": "Audiobooks - Travel - Guided Tours"
            },
            {
              "value": "audiobooks_coll_1672",
              "label": "Audiobooks - Young adult"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Family___Relationships",
              "label": "Audiobooks - Young adult - Family & Relationships"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Health___Sports",
              "label": "Audiobooks - Young adult - Health & Sports"
            },
            {
              "value": "audiobooks_subj_Young_Adult.History___Historical_Fiction",
              "label": "Audiobooks - Young adult - History & Historical Fiction"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Mystery___Thrillers",
              "label": "Audiobooks - Young adult - Mystery & Thrillers"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Myths___Legends",
              "label": "Audiobooks - Young adult - Myths & Legends"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Religion___Spirituality",
              "label": "Audiobooks - Young adult - Religion & Spirituality"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Romance___Friendship",
              "label": "Audiobooks - Young adult - Romance & Friendship"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Science_Fiction___Fantasy",
              "label": "Audiobooks - Young adult - Science Fiction & Fantasy"
            },
            {
              "value": "audiobooks_subj_Young_Adult.Social_Issues",
              "label": "Audiobooks - Young adult - Social Issues"
            },
            {
              "value": "coll_1401",
              "label": "Comics - undefined"
            },
            {
              "value": "subj_Comics___Graphic_Novels.General",
              "label": "Comics - General"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Crime___Mystery",
              "label": "Comics - Crime & Mystery"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Fantasy",
              "label": "Comics - Fantasy"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Horror",
              "label": "Comics - Horror"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Literary",
              "label": "Comics - Literary"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Manga",
              "label": "Comics - Manga"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Media_Tie-In",
              "label": "Comics - Media Tie-In"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Science_Fiction",
              "label": "Comics - Science Fiction"
            },
            {
              "value": "subj_Comics___Graphic_Novels.Superheroes",
              "label": "Comics - Science Fiction"
            },
            {
              "value": "coll_1689",
              "label": "Children's books - undefined"
            },
            {
              "value": "coll_1690",
              "label": "Children's books - Action & adventure"
            },
            {
              "value": "coll_1691",
              "label": "Children's books - Animals & nature"
            },
            {
              "value": "coll_1693",
              "label": "Children's books - Comics"
            },
            {
              "value": "coll_1692",
              "label": "Children's books - Early learning"
            },
            {
              "value": "coll_1694",
              "label": "Children's books - Education"
            },
            {
              "value": "coll_1696",
              "label": "Children's books - Fiction"
            },
            {
              "value": "coll_1698",
              "label": "Children's books - Growing up"
            },
            {
              "value": "coll_1699",
              "label": "Children's books - History & biographies"
            },
            {
              "value": "coll_1702",
              "label": "Children's books - Mysteries"
            },
            {
              "value": "coll_1704",
              "label": "Children's books - Science fiction & fantasy"
            },
            {
              "value": "coll_1705",
              "label": "Children's books - Sports"
            }
          ]
        },
        {
          "key": "chart",
          "type": "text",
          "label_key": "serp.fields.chart",
          "label": "Chart",
          "help": "Pre-defined chart name"
        },
        {
          "key": "next_page_token",
          "type": "text",
          "label_key": "serp.fields.next_page_token",
          "label": "Next page token",
          "help": "This parameter defines Next page token for the SERP request. Parameter name: next_page_token."
        },
        {
          "key": "section_page_token",
          "type": "text",
          "label_key": "serp.fields.section_page_token",
          "label": "Section page token",
          "help": "This parameter defines Section page token for the SERP request. Parameter name: section_page_token."
        },
        {
          "key": "see_more_token",
          "type": "text",
          "label_key": "serp.fields.see_more_token",
          "label": "See more token",
          "help": "This parameter defines See more token for the SERP request. Parameter name: see_more_token."
        },
        {
          "key": "price",
          "type": "select",
          "label_key": "serp.fields.price",
          "label": "Price",
          "help": "Price filter",
          "options": [
            {
              "value": "",
              "label": "Any"
            },
            {
              "value": "1",
              "label": "Free"
            },
            {
              "value": "2",
              "label": "Paid"
            }
          ]
        },
        {
          "key": "age",
          "type": "select",
          "label_key": "serp.fields.age",
          "label": "Age group",
          "help": "Target age group filter",
          "options": [
            {
              "value": "AGE_RANGE1",
              "label": "Ages 5 and under"
            },
            {
              "value": "AGE_RANGE2",
              "label": "Ages 6-8"
            },
            {
              "value": "AGE_RANGE3",
              "label": "Ages 9-12"
            }
          ]
        },
        {
          "key": "no_cache",
          "type": "switch",
          "default_value": false,
          "label_key": "serp.fields.no_cache",
          "label": "No Cache",
          "help": "When enabled, the adapter returns a fresh preview result."
        }
      ]
    }
  ],
  "category": {
    "key": "google",
    "name": "Google",
    "icon": "google"
  },
  "is_default_engine": false
}