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    "name": "Kołczan Książek",
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    "url": "https://www.kolczanksiazek.pl"
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  "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": "The Fourth K",
  "subtitle": null,
  "slug": "the-fourth-k",
  "url": "https://www.kolczanksiazek.pl/mario-puzo/en/the-fourth-k",
  "json": "https://www.kolczanksiazek.pl/mario-puzo/en/the-fourth-k.json",
  "markdown": "https://www.kolczanksiazek.pl/mario-puzo/en/the-fourth-k.md",
  "authors": [
    {
      "name": "Mario Puzo",
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      "url": "https://www.kolczanksiazek.pl/mario-puzo"
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  "language": "en_GB",
  "original_title": null,
  "original_language": null,
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  "genres": [],
  "series": [],
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  "description": "A novel from the author and screenwriter behind the classic Godfather trilogy",
  "editions": [
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      "title": "The Fourth K",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/mario-puzo/en/the-fourth-k/9781447265474",
      "publisher": "Pan",
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-14-4726-547-4",
      "pages": 512,
      "published": "2014-11-06",
      "language": "en_GB",
      "cover": "https://quivercdn.com/covers/pan/mario-puzo/the-fourth-k_978-14-4726-547-4.jpg?v=2026-05-21%2021%3A02%3A08"
    },
    {
      "title": "The Fourth K",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/mario-puzo/en/the-fourth-k/9780345476739",
      "publisher": "Ballantine Books",
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-03-4547-673-9",
      "pages": 496,
      "published": "2004-11-23",
      "language": "en_US",
      "cover": "https://quivercdn.com/covers/ballantine-books/mario-puzo/the-fourth-k_978-03-4547-673-9.jpg?v=2026-06-15%2009%3A31%3A26"
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  ],
  "other_languages": [
    {
      "title": "Czwarty K",
      "language": "pl_PL",
      "url": "https://www.kolczanksiazek.pl/mario-puzo/czwarty-k"
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  ],
  "characters": [],
  "chapters": []
}