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  "type": "book",
  "site": {
    "name": "Kołczan Książek",
    "language": "pl-PL",
    "url": "https://www.kolczanksiazek.pl"
  },
  "formats": "Każda podstrona ma dwie wersje z tymi samymi danymi: JSON (adres strony + .json) i markdown (adres strony + .md). Do każdego `url` w tym dokumencie można dopisać .json albo .md.",
  "title": "El cuarto protocolo",
  "subtitle": null,
  "slug": "el-cuarto-protocolo",
  "url": "https://www.kolczanksiazek.pl/frederick-forsyth/es/el-cuarto-protocolo",
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      "url": "https://www.kolczanksiazek.pl/frederick-forsyth"
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  "language": "es_ES",
  "original_title": "The Fourth Protocol",
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      "code": "FH",
      "heading": "Thrillery i suspens"
    },
    {
      "code": "FHD",
      "heading": "Thrillery szpiegowskie"
    },
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      "code": "FJM",
      "heading": "Wojna, walka zbrojna i literatura militarna"
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  ],
  "series": [],
  "cover": "https://quivercdn.com/covers/debolsillo/frederick-forsyth/el-cuarto-protocolo_978-84-0135-260-7.jpg?v=2026-04-09%2017%3A05%3A14",
  "description": "Los servicios secretos británicos encargan a uno de sus agentes que descubra a un traidor que actúa dentro de la organización. Mientras tanto, Gran Bretaña está a punto de celebrar elecciones generales y los soviéticos pretenden que gane el Partido Laborista, dominado por una facción de izquierda. Para ello, el jefe del Kremlin juega la baza del desarme nuclear: envía un agente secreto a Inglaterra con el propósito de activar una bomba atómica y hacerla estallar antes de las elecciones.",
  "editions": [
    {
      "title": "El cuarto protocolo",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/frederick-forsyth/es/el-cuarto-protocolo/9788401352607",
      "publisher": "Debolsillo",
      "publisher_series": [],
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-84-0135-260-7",
      "pages": 512,
      "published": "2011-09-22",
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    {
      "title": "El cuarto protocolo",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/frederick-forsyth/es/el-cuarto-protocolo/9788497595124",
      "publisher": "Debolsillo",
      "publisher_series": [],
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
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      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-84-9759-512-4",
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      "published": "2003-03-20",
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  ],
  "other_languages": [
    {
      "title": "Čtvrtý protokol",
      "language": "cs_CZ",
      "url": "https://www.kolczanksiazek.pl/frederick-forsyth/cs/ctvrty-protokol"
    },
    {
      "title": "The Fourth Protocol",
      "language": "en_US",
      "url": "https://www.kolczanksiazek.pl/frederick-forsyth/en/the-fourth-protocol"
    },
    {
      "title": "Il quarto protocollo",
      "language": "it_IT",
      "url": "https://www.kolczanksiazek.pl/frederick-forsyth/it/il-quarto-protocollo"
    },
    {
      "title": "Czwarty protokół",
      "language": "pl_PL",
      "url": "https://www.kolczanksiazek.pl/frederick-forsyth/czwarty-protokol"
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  "characters": [],
  "chapters": []
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