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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": "Roverandom",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/john-ronald-reuel-tolkien/en/roverandom/9780008737689",
  "publisher": "HarperCollins Publishers",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
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  "isbn": "978-00-0873-768-9",
  "pages": 192,
  "published": "2025-01-01",
  "language": "en_GB",
  "cover": "https://quivercdn.com/covers/harpercollins-publishers/jrr-tolkien/roverandom_978-00-0873-768-9-62b1ac67.webp?v=2026-10-25%2017%3A50%3A48",
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  "markdown": "https://www.kolczanksiazek.pl/john-ronald-reuel-tolkien/en/roverandom/9780008737689.md",
  "binding": "Softcover",
  "description": "Designed to take fans of The Hobbit and The Lord of the Rings deeper into the myths and legends of Middle-earthThe Silmarillion is an account of the Elder Days, of the First Age of Tolkien's world. It is the ancient drama to which the characters in The Lord of the Rings look back, and in whose...",
  "book": {
    "title": "Roverandom",
    "slug": "roverandom",
    "url": "https://www.kolczanksiazek.pl/john-ronald-reuel-tolkien/en/roverandom"
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  "authors": [
    {
      "name": "John Ronald Reuel Tolkien",
      "slug": "john-ronald-reuel-tolkien",
      "url": "https://www.kolczanksiazek.pl/john-ronald-reuel-tolkien"
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