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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": "Co to jest chrześcijaństwo?",
  "subtitle": null,
  "slug": "co-to-jest-chrzescijanstwo",
  "url": "https://www.kolczanksiazek.pl/benedykt-xvi/co-to-jest-chrzescijanstwo",
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  "authors": [
    {
      "name": "Benedykt XVI",
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  "language": "pl_PL",
  "original_title": "Was ist das Christentum?",
  "original_language": "de",
  "first_published": "2025-01-01",
  "genres": [
    {
      "code": "J",
      "heading": "Społeczeństwo i nauki społeczne"
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    {
      "code": "QR",
      "heading": "Religie i wierzenia"
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  "series": [],
  "cover": "https://quivercdn.com/covers/esprit/benedykt-xvi/co-to-jest-chrzescijanstwo_978-83-6853-638-6.webp?v=2026-08-09%2000%3A04%3A12",
  "description": "Papież Benedykt XVI wyraził wolę, by ta książka została opublikowana dopiero po jego śmierci. Odkryj głębię jego prorockiego nauczania! To bardzo osobista książka Benedykta XVI, który u kresu życia zaczął porządkować liczne swoje wypowiedzi i pisma z czasu, kiedy był już papieżem emerytem....",
  "editions": [
    {
      "title": "Co to jest chrześcijaństwo?",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/benedykt-xvi/co-to-jest-chrzescijanstwo/9788368536386",
      "publisher": "Esprit",
      "publisher_series": [],
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
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      "isbn": "978-83-6853-638-6",
      "pages": 272,
      "published": "2025-01-01",
      "language": "pl_PL",
      "cover": "https://quivercdn.com/covers/esprit/benedykt-xvi/co-to-jest-chrzescijanstwo_978-83-6853-638-6.webp?v=2026-08-09%2000%3A04%3A12"
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    {
      "title": "Co to jest chrześcijaństwo?",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/benedykt-xvi/co-to-jest-chrzescijanstwo/9788367530736",
      "publisher": "Esprit",
      "publisher_series": [],
      "translators": [],
      "medium": "paper",
      "duration_seconds": null,
      "narrators": [],
      "illustrators": [],
      "cover_artists": [],
      "isbn": "978-83-6753-073-6",
      "pages": 272,
      "published": "2023-04-18",
      "language": "pl_PL",
      "cover": "https://quivercdn.com/covers/esprit/benedykt-xvi/co-to-jest-chrzescijanstwo-testament-duchowy_978-83-6753-073-6-20339a93.jpg?v=2026-09-05%2014%3A34%3A07"
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  "other_languages": [
    {
      "title": "Che cos'è il cristianesimo",
      "language": "it_IT",
      "url": "https://www.kolczanksiazek.pl/pope-benedict-xvi/it/che-cose-il-cristianesimo"
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    {
      "title": "O que é o cristianismo",
      "language": "pt_PT",
      "url": "https://www.kolczanksiazek.pl/papa-bento-xvi/pt/o-que-e-o-cristianismo"
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}