{
  "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": "Grendel",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/john-gardner/en/grendel/9780679723110",
  "publisher": "Vintage",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "978-06-7972-311-0",
  "pages": 192,
  "published": "1989-05-14",
  "language": "en_US",
  "cover": "https://quivercdn.com/covers/vintage/john-gardner/grendel_978-06-7972-311-0.jpg?v=2026-06-17%2014%3A40%3A05",
  "json": "https://www.kolczanksiazek.pl/john-gardner/en/grendel/9780679723110.json",
  "markdown": "https://www.kolczanksiazek.pl/john-gardner/en/grendel/9780679723110.md",
  "binding": "Softcover",
  "description": "This classic and much lauded retelling of Beowulf follows the monster Grendel as he learns about humans and fights the war at the center of the Anglo Saxon classic epic. \" An extraordinary achievement.\"—New...",
  "book": {
    "title": "Grendel",
    "slug": "grendel",
    "url": "https://www.kolczanksiazek.pl/john-gardner/en/grendel"
  },
  "authors": [
    {
      "name": "John Gardner",
      "slug": "john-gardner",
      "url": "https://www.kolczanksiazek.pl/john-gardner"
    }
  ]
}