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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.",
  "title": "Il pendolo di Foucault",
  "subtitle": null,
  "slug": "il-pendolo-di-foucault",
  "url": "https://www.kolczanksiazek.pl/umberto-eco/it/il-pendolo-di-foucault",
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  "authors": [
    {
      "name": "Umberto Eco",
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  "original_title": "Il pendolo di Foucault",
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      "heading": "Klasyka literatury pięknej"
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      "code": "FF",
      "heading": "Literatura kryminalna i detektywistyczna"
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    {
      "code": "FV",
      "heading": "Literatura historyczna"
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    {
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  "series": [],
  "cover": "https://quivercdn.com/covers/gruppo-editoriale-fabbri/umberto-eco/pendolo-di-foucault_978-88-4520-408-1.jpg?v=2026-06-24%2018%3A11%3A39",
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  "editions": [
    {
      "title": "Il pendolo di Foucault",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/umberto-eco/it/il-pendolo-di-foucault/9788845204081",
      "publisher": "Gruppo Editoriale Fabbri",
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-88-4520-408-1",
      "pages": null,
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      "title": "Foucaultovo kyvadlo",
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    },
    {
      "title": "Das Foucaultsche Pendel",
      "language": "de_DE",
      "url": "https://www.kolczanksiazek.pl/umberto-eco/de/das-foucaultsche-pendel"
    },
    {
      "title": "Foucault's Pendulum",
      "language": "en_GB",
      "url": "https://www.kolczanksiazek.pl/umberto-eco/en/foucaults-pendulum"
    },
    {
      "title": "El péndulo de Foucault",
      "language": "es_ES",
      "url": "https://www.kolczanksiazek.pl/umberto-eco/es/el-pendulo-de-foucault"
    },
    {
      "title": "Le pendule de Foucault",
      "language": "fr_FR",
      "url": "https://www.kolczanksiazek.pl/umberto-eco/fr/le-pendule-de-foucault"
    },
    {
      "title": "Wahadło Foucaulta",
      "language": "pl_PL",
      "url": "https://www.kolczanksiazek.pl/umberto-eco/wahadlo-foucaulta"
    },
    {
      "title": "O Pêndulo de Foucault",
      "language": "pt_PT",
      "url": "https://www.kolczanksiazek.pl/umberto-eco/pt/o-pendulo-de-foucault"
    },
    {
      "title": "Маятник Фуко",
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      "url": "https://www.kolczanksiazek.pl/umberto-eko/uk/maiatnyk-fuko"
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  "characters": [],
  "chapters": []
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