{
  "type": "edition",
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    "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": "Purple Cow",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/seth-godin/en/purple-cow/9781591843177",
  "publisher": "portfolio",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "978-15-9184-317-7",
  "pages": 224,
  "published": "2009-11-12",
  "language": "en_US",
  "cover": "https://quivercdn.com/covers/portfolio/seth-godin/purple-cow-new-edition_978-15-9184-317-7.jpg?v=2026-06-06%2008%3A00%3A26",
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  "markdown": "https://www.kolczanksiazek.pl/seth-godin/en/purple-cow/9781591843177.md",
  "binding": "Hardcover",
  "description": "The cult classic that revolutionized marketing by teaching businesses that you’re either remarkable or invisible. Few authors have had the kind of lasting impact and global reach that Seth Godin...",
  "book": {
    "title": "Purple Cow",
    "slug": "purple-cow",
    "url": "https://www.kolczanksiazek.pl/seth-godin/en/purple-cow"
  },
  "authors": [
    {
      "name": "Seth Godin",
      "slug": "seth-godin",
      "url": "https://www.kolczanksiazek.pl/seth-godin"
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}