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    "name": "Kołczan Książek",
    "language": "pl-PL",
    "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.",
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  "binding": "E-book",
  "description": "This four-color illustrated edition of the bestselling book, The Four Agreements, celebrates the 15th anniversary of a personal growth classic In The Four Agreements don Miguel Ruiz reveals the source...",
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