{
  "type": "series",
  "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.",
  "name": "Elfy ziemi i powietrza",
  "slug": "elfy-ziemi-i-powietrza",
  "url": "https://www.kolczanksiazek.pl/holly-black/seria/elfy-ziemi-i-powietrza",
  "json": "https://www.kolczanksiazek.pl/holly-black/seria/elfy-ziemi-i-powietrza.json",
  "markdown": "https://www.kolczanksiazek.pl/holly-black/seria/elfy-ziemi-i-powietrza.md",
  "author": {
    "name": "Holly Black",
    "slug": "holly-black",
    "url": "https://www.kolczanksiazek.pl/holly-black"
  },
  "books_in_catalog": 4,
  "volumes_total": 3,
  "published": "2006–2021",
  "missing_volumes": [],
  "books": [
    {
      "volume": 1,
      "title": "Danina. Nowoczesna baśń",
      "subtitle": null,
      "slug": "danina-nowoczesna-basn",
      "url": "https://www.kolczanksiazek.pl/holly-black/danina-nowoczesna-basn",
      "publisher": "Wydawnictwo Dolnośląskie",
      "published": "2006-01-01",
      "isbn": "978-83-7384-505-3"
    },
    {
      "volume": 1,
      "title": "Zła królowa",
      "subtitle": null,
      "slug": "zla-krolowa",
      "url": "https://www.kolczanksiazek.pl/holly-black/zla-krolowa",
      "publisher": "jaguar",
      "published": "2020-09-30",
      "isbn": "978-83-7686-908-7"
    },
    {
      "volume": 2,
      "title": "Serce trolla",
      "subtitle": null,
      "slug": "serce-trolla",
      "url": "https://www.kolczanksiazek.pl/holly-black/serce-trolla",
      "publisher": "jaguar",
      "published": "2021-01-01",
      "isbn": "978-83-7686-946-9"
    },
    {
      "volume": 3,
      "title": "Żelazna kraina",
      "subtitle": null,
      "slug": "zelazna-kraina",
      "url": "https://www.kolczanksiazek.pl/holly-black/zelazna-kraina",
      "publisher": "jaguar",
      "published": "2021-01-01",
      "isbn": "978-83-7686-962-9"
    }
  ]
}