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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": "Duch Gór – Rübezahl. Geneza i upowszechnienie legendy",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/lucyna-bialy/duch-gor-rubezahl-geneza-i-upowszechnienie-legendy/9788367831352",
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  "publisher_series": [],
  "translators": [],
  "medium": "paper",
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  "cover_artists": [],
  "isbn": "978-83-6783-135-2",
  "pages": 156,
  "published": "2023-01-01",
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  "binding": "Softcover",
  "description": "Praca doktorska wydana w 2003 r. (pierwsze",
  "book": {
    "title": "Duch Gór – Rübezahl. Geneza i upowszechnienie legendy",
    "slug": "duch-gor-rubezahl-geneza-i-upowszechnienie-legendy",
    "url": "https://www.kolczanksiazek.pl/lucyna-bialy/duch-gor-rubezahl-geneza-i-upowszechnienie-legendy"
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  "authors": [
    {
      "name": "Lucyna Biały",
      "slug": "lucyna-bialy",
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