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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": "Wigilia Wszystkich Świętych",
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  "slug": "wigilia-wszystkich-swietych",
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  "description": "Mała Joyce zostaje utopiona podczas niewinnej halloweenowej zabawy, bo powiedziała, że kiedyś była świadkiem morderstwa. Wezwany na pomoc Herkules Poirot ma więc do rozwiązania sprawę zabójstwa sprzed kilku dni i… kilku morderstw sprzed paru lat. W powieści unosi się duch tytułowego święta, a analiza ludzkich charakterów przyprawia o gęsią skórkę.",
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    {
      "title": "Wigilia Wszystkich Świętych",
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      "isbn": "978-83-2716-137-6",
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      "title": "Assassinio a Venezia",
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    {
      "title": "A Festa das Bruxas",
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