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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 91-Storey Treehouse",
  "subtitle": null,
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    },
    {
      "code": "YF",
      "heading": "Literatura dla dzieci i młodzieży"
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    {
      "code": "YFB",
      "heading": "Współczesna beletrystyka dla dzieci i młodzieży"
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      "heading": "Children’s / Teenage fiction and stories: Folk and Fairy tales"
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  "cover": "https://quivercdn.com/covers/macmillan-children-s-books/andy-griffiths/the-91-storey-treehouse_978-15-0983-916-2.jpg?v=2026-05-21%2016%3A46%3A02",
  "description": "Easy-to-read, visually exciting and wonderfully entertaining, the pace is fast and the fun never stops. Simply brilliant and guaranteed to get even the most reluctant readers begging for more!",
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      "title": "The 91-Storey Treehouse",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/andy-griffiths/en/the-91-storey-treehouse/9781509839162",
      "publisher": "Macmillan Children's Books",
      "publisher_series": [],
      "translators": [],
      "medium": "paper",
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      "cover_artists": [],
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      "pages": 384,
      "published": "2017-08-24",
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      "title": "91-poverkhovyy budynok na derevi",
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  "chapters": []
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