{
  "type": "edition",
  "site": {
    "name": "Kołczan Książek",
    "language": "pl-PL",
    "url": "https://www.kolczanksiazek.pl"
  },
  "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": "Petra",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/marianna-coppo/en/petra/9780735262676",
  "publisher": "Tundra Books",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "978-07-3526-267-6",
  "pages": 48,
  "published": "2018-02-06",
  "language": "en_US",
  "cover": "https://quivercdn.com/covers/tundra-books/marianna-coppo/petra_978-07-3526-267-6.jpg?v=2026-06-06%2010%3A16%3A56",
  "json": "https://www.kolczanksiazek.pl/marianna-coppo/en/petra/9780735262676.json",
  "markdown": "https://www.kolczanksiazek.pl/marianna-coppo/en/petra/9780735262676.md",
  "binding": "Hardcover",
  "description": "The humorous adventures of an irresistible little rock who finds herself in constantly changing circumstances, Petra is a picture book that celebrates the power of perspective and believing in yourself....",
  "book": {
    "title": "Petra",
    "slug": "petra",
    "url": "https://www.kolczanksiazek.pl/marianna-coppo/en/petra"
  },
  "authors": [
    {
      "name": "Marianna Coppo",
      "slug": "marianna-coppo",
      "url": "https://www.kolczanksiazek.pl/marianna-coppo"
    }
  ]
}