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  "site": {
    "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": "Zima Muminków",
  "subtitle": null,
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  "markdown": "https://www.kolczanksiazek.pl/tove-jansson/zima-muminkow.md",
  "authors": [
    {
      "name": "Tove Jansson",
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  "original_title": "Trollvinter",
  "original_language": "sv",
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  "description": "Życie Muminków i ich przyjaciół z Doliny skupia się wokół domu Mamy i Tatusia Muminka, gdzie każdy może liczyć na pomoc i przyjaźń. Panna Migotka, Paszczak, mała Mi, Włóczykij, Ryjek czy straszna Buka tworzą galerię postaci, które na zawsze pozostaną w pamięci czytelników.",
  "editions": [
    {
      "title": "Zima Muminków",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/tove-jansson/zima-muminkow/9788310143143",
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    {
      "title": "Zima Muminków",
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      "url": "https://www.kolczanksiazek.pl/tove-jansson/zima-muminkow/9788310140159",
      "publisher": "Nasza Księgarnia",
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      "isbn": "978-83-1014-015-9",
      "pages": 160,
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      "title": "Zima Muminków",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/tove-jansson/zima-muminkow/9788310136091",
      "publisher": "Nasza Księgarnia",
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      "isbn": "978-83-1013-609-1",
      "pages": 176,
      "published": "2020-03-11",
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  "other_languages": [
    {
      "title": "Čarovná zima",
      "language": "cs_CZ",
      "url": "https://www.kolczanksiazek.pl/tove-jansson/cs/carovna-zima"
    },
    {
      "title": "Winter im Mumintal",
      "language": "de_DE",
      "url": "https://www.kolczanksiazek.pl/tove-jansson/de/winter-im-mumintal"
    },
    {
      "title": "Moominland Midwinter",
      "language": "en_US",
      "url": "https://www.kolczanksiazek.pl/tove-jansson/en/moominland-midwinter"
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