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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": "Vicious. Nikczemni",
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      "heading": "Fantastyka naukowa (science fiction)"
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    {
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  "description": "Victoria Schwab, bestsellerowa autorka i zwyciężczyni Goodreads Choice Awards 2018 wraca z wyjątkową serią „ Złoczyńcy”! Poznaj nowe oblicze autorki „ Okrutnej pieśni”, „ Mrocznego duetu” i „ Odcieni magii”. Życie – takie, jakim jest naprawdę – to walka nie między złym a dobrym, lecz między złym, a...",
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    {
      "title": "Vicious: Nikczemni",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/victoria-schwab/vicious-nikczemni/9788379761814",
      "publisher": "WE NEED YA",
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      "isbn": "978-83-7976-181-4",
      "pages": 448,
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    {
      "title": "Vicious - Das Böse in uns",
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    {
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    },
    {
      "title": "Зловісний",
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