{
  "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/9780241844502",
  "publisher": "ladybird",
  "publisher_series": [],
  "translators": [],
  "medium": "ebook",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "978-02-4184-450-2",
  "pages": null,
  "published": "2027-03-04",
  "language": "en_GB",
  "cover": "https://quivercdn.com/covers/ladybird/marianna-coppo/petra_978-02-4184-450-2-6c142d62.webp?v=2026-10-19%2002%3A32%3A54",
  "json": "https://www.kolczanksiazek.pl/marianna-coppo/en/petra/9780241844502.json",
  "markdown": "https://www.kolczanksiazek.pl/marianna-coppo/en/petra/9780241844502.md",
  "binding": "E-book",
  "description": "Meet Petra — she's not just a rock . . . Petra is a mighty mountain that can't be moved by the wind or time. Or so we think until we discover that she's actually something even more astonishing. Petra has the potential to be anything – an island, an egg, even an elephant – thanks to her lively imagination. A powerful and charming story about identity, imagination and being yourself — whatever that may be. From acclaimed author-illustrator, Marianna Coppo.",
  "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"
    }
  ]
}