{
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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": "Eat That Frog! for Students",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/brian-tracy/en/eat-that-frog-for-students/9781523091256",
  "publisher": "Berrett Koehler Publishers",
  "publisher_series": [],
  "translators": [],
  "medium": "paper",
  "duration_seconds": null,
  "narrators": [],
  "illustrators": [],
  "cover_artists": [],
  "isbn": "978-15-2309-125-6",
  "pages": 168,
  "published": "2020-12-29",
  "language": "en_US",
  "cover": "https://quivercdn.com/covers/berrett-koehler-publishers/brian-tracy/eat-that-frog-for-students_978-15-2309-125-6.jpg?v=2026-06-07%2003%3A06%3A33",
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  "markdown": "https://www.kolczanksiazek.pl/brian-tracy/en/eat-that-frog-for-students/9781523091256.md",
  "binding": "Softcover",
  "description": "Adapted from the bestseller that “firmly gets to the root cause of why people procrastinate [and] effortlessly explains how to boost your productivity” (Micro Business Hub). Students of all...",
  "book": {
    "title": "Eat That Frog! for Students",
    "slug": "eat-that-frog-for-students",
    "url": "https://www.kolczanksiazek.pl/brian-tracy/en/eat-that-frog-for-students"
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  "authors": [
    {
      "name": "Brian Tracy",
      "slug": "brian-tracy",
      "url": "https://www.kolczanksiazek.pl/brian-tracy"
    },
    {
      "name": "Anna Leinberger",
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      "url": "https://www.kolczanksiazek.pl/anna-leinberger"
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