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    "url": "https://www.kolczanksiazek.pl"
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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": "The Secret of Secrets",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/dan-brown/the-secret-of-secrets/9781787634558",
  "publisher": "bantam",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
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  "cover_artists": [],
  "isbn": "978-17-8763-455-8",
  "pages": 688,
  "published": "2025-01-01",
  "language": "pl_PL",
  "cover": "https://quivercdn.com/covers/bantam/dan-brown/the-secret-of-secrets_978-17-8763-455-8.webp?v=2026-08-17%2016%3A28%3A31",
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  "markdown": "https://www.kolczanksiazek.pl/dan-brown/the-secret-of-secrets/9781787634558.md",
  "binding": "Hardcover",
  "description": "Robert Langdon is back in the long-awaited new race-against-time thriller from the global bestselling author of The Da Vinci Code and Angels and Demons. Accompanying celebrated academic, Katherine Solomon, to a lecture she`s been invited to give in Prague, Robert Langdon`s world spirals out of...",
  "book": {
    "title": "The Secret of Secrets",
    "slug": "the-secret-of-secrets",
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  "authors": [
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      "name": "Dan Brown",
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