{
  "type": "series",
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    "name": "Kołczan Książek",
    "language": "pl-PL",
    "url": "https://www.kolczanksiazek.pl"
  },
  "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.",
  "name": "Pearson English Readers",
  "slug": "pearson-english-readers",
  "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle/seria/pearson-english-readers",
  "json": "https://www.kolczanksiazek.pl/arthur-conan-doyle/seria/pearson-english-readers.json",
  "markdown": "https://www.kolczanksiazek.pl/arthur-conan-doyle/seria/pearson-english-readers.md",
  "author": {
    "name": "Arthur Conan Doyle",
    "slug": "arthur-conan-doyle",
    "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle"
  },
  "books_in_catalog": 2,
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  "published": "2025",
  "missing_volumes": [],
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      "title": "Sherlock Holmes and the Mystery of Boscombe Pool. Pearson English Readers. Level 3",
      "subtitle": null,
      "slug": "sherlock-holmes-and-the-mystery-of-boscombe-pool-pearson-english-readers-level-3",
      "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle/sherlock-holmes-and-the-mystery-of-boscombe-pool-pearson-english-readers-level-3",
      "publisher": "Pearson",
      "published": "2025-01-01",
      "isbn": "978-12-9274-846-7"
    },
    {
      "volume": null,
      "title": "Three Short Stories of Sherlock Holmes. Pearson English Readers. Level 2",
      "subtitle": null,
      "slug": "three-short-stories-of-sherlock-holmes-pearson-english-readers-level-2",
      "url": "https://www.kolczanksiazek.pl/arthur-conan-doyle/three-short-stories-of-sherlock-holmes-pearson-english-readers-level-2",
      "publisher": "Pearson",
      "published": "2025-01-01",
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