{
  "type": "book",
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    "name": "Kołczan Książek",
    "language": "pl-PL",
    "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": "Karl Marx",
  "subtitle": null,
  "slug": "karl-marx",
  "url": "https://www.kolczanksiazek.pl/isaiah-berlin/pt/karl-marx",
  "json": "https://www.kolczanksiazek.pl/isaiah-berlin/pt/karl-marx.json",
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  "authors": [
    {
      "name": "Isaiah Berlin",
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      "url": "https://www.kolczanksiazek.pl/isaiah-berlin"
    }
  ],
  "language": "pt_BR",
  "original_title": "Karl Marx",
  "original_language": "en",
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  "series": [],
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  "description": null,
  "editions": [
    {
      "title": "Karl Marx",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/isaiah-berlin/pt/karl-marx/9789724418155",
      "publisher": "Editora Alta Books",
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-97-2441-815-5",
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      "language": "pt_BR",
      "cover": "https://quivercdn.com/covers/editora-alta-books/berlin/karl-marx_978-97-2441-815-5.jpg?v=2026-06-29%2004%3A26%3A47"
    }
  ],
  "other_languages": [
    {
      "title": "Karol Marks. Jego życie i środowisko",
      "language": "pl_PL",
      "url": "https://www.kolczanksiazek.pl/isaiah-berlin/karol-marks-jego-zycie-i-srodowisko"
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  ],
  "characters": [],
  "chapters": []
}