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    "name": "Kołczan Książek",
    "language": "pl-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": "Master Your Time, Master Your Life",
  "subtitle": null,
  "url": "https://www.kolczanksiazek.pl/brian-tracy/en/master-your-time-master-your-life/9780399183829",
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  "medium": "paper",
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  "isbn": "978-03-9918-382-9",
  "pages": 240,
  "published": "2017-10-10",
  "language": "en_US",
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  "binding": "Softcover",
  "description": "Discover 10 Essential Ways to Make the Most of Your Time“Time is money,” as the saying goes, but most of us never feel we have enough of either. In Master Your Time, Master Your Life, internationally...",
  "book": {
    "title": "Master Your Time, Master Your Life",
    "slug": "master-your-time-master-your-life",
    "url": "https://www.kolczanksiazek.pl/brian-tracy/en/master-your-time-master-your-life"
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  "authors": [
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      "name": "Brian Tracy",
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