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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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  "subtitle": null,
  "slug": "kolej-podziemna-czarna-krew-ameryki-ebook",
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  "authors": [
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  "original_title": "The Underground Railroad",
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    {
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  "series": [],
  "cover": "https://quivercdn.com/covers/albatros/colson-whitehead/kolej-podziemna-czarna-krew-ameryki-ebook_978-83-8215-623-2-1050f452.webp?v=2026-09-28%2002%3A28%3A06",
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  "editions": [
    {
      "title": "KOLEJ PODZIEMNA. CZARNA KREW AMERYKI - ebook",
      "subtitle": null,
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      "publisher": "Albatros",
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      "cover_artists": [],
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