{
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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": "Heidi",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/johanna-spyri/en/heidi/9781101908136",
  "publisher": "Everyman's Library",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
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  "cover_artists": [],
  "isbn": "978-11-0190-813-6",
  "pages": 384,
  "published": "2019-02-05",
  "language": "en_US",
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  "markdown": "https://www.kolczanksiazek.pl/johanna-spyri/en/heidi/9781101908136.md",
  "binding": "Hardcover",
  "description": "The story of an irrepressible orphan girl in the Swiss Alps, written in 1881, has long been one of the most beloved and best-selling children's classics in the world. This hardcover edition features a...",
  "book": {
    "title": "Heidi",
    "slug": "heidi",
    "url": "https://www.kolczanksiazek.pl/johanna-spyri/en/heidi"
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  "authors": [
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      "name": "Johanna Spyri",
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    {
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