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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": "Tajemnicze krainy",
  "subtitle": null,
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  "language": "pl_PL",
  "original_title": "The Land of Mist",
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      "heading": "Proza literacka"
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  "cover": "https://quivercdn.com/covers/armoryka/arthur-conan-doyle/tajemnicze-krainy-the-land-of-mist_978-83-7950-759-7-9b26af81.jpg?v=2026-09-04%2017%3A12%3A29",
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  "editions": [
    {
      "title": "Tajemnicze krainy",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle/tajemnicze-krainy/9788379507597",
      "publisher": "Armoryka",
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      "isbn": "978-83-7950-759-7",
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    {
      "title": "The Land of Mist",
      "language": "en_GB",
      "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle/en/the-land-of-mist"
    },
    {
      "title": "A terra da bruma: edição comentada",
      "language": "pt_BR",
      "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle/pt/a-terra-da-bruma-edicao-comentada"
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