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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": "Twenty Thousand Leagues Under the Sea",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/jules-verne/en/twenty-thousand-leagues-under-the-sea/9780451531698",
  "publisher": "Signet",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "978-04-5153-169-8",
  "pages": 464,
  "published": "2010-10-05",
  "language": "en_US",
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  "markdown": "https://www.kolczanksiazek.pl/jules-verne/en/twenty-thousand-leagues-under-the-sea/9780451531698.md",
  "binding": "Softcover",
  "description": "Join Captain Nemo and the Nautilus as they journey into the deep in Jules Verne’s classic science fiction tale. In an age that has seen the wildest speculations of science become reality, Jules...",
  "book": {
    "title": "Twenty Thousand Leagues Under the Sea",
    "slug": "twenty-thousand-leagues-under-the-sea",
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  "authors": [
    {
      "name": "Júlio Verne",
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      "url": "https://www.kolczanksiazek.pl/jules-verne"
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    {
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