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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": "Ecclesia de Eucharistia",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/jan-pawel-ii/ecclesia-de-eucharistia/8388301497",
  "publisher": "Wydawnictwo Wrocławskiej Księgarni Archidiecezjalnej TUM",
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "8-388-30149-7",
  "pages": 83,
  "published": "2003-01-01",
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  "binding": "Softcover",
  "description": "Encyklika Ojca Świętego Jana Pawła II o Eucharystii w życiu Kościoła.",
  "book": {
    "title": "Ecclesia de Eucharistia",
    "slug": "ecclesia-de-eucharistia",
    "url": "https://www.kolczanksiazek.pl/jan-pawel-ii/ecclesia-de-eucharistia"
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  "authors": [
    {
      "name": "Jan Paweł II",
      "slug": "jan-pawel-ii",
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}