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    "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": "The Only EKG Book You'll Ever Need",
  "subtitle": null,
  "slug": "the-only-ekg-book-youll-ever-need",
  "url": "https://www.kolczanksiazek.pl/malcolm-s-thaler/the-only-ekg-book-youll-ever-need",
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  "markdown": "https://www.kolczanksiazek.pl/malcolm-s-thaler/the-only-ekg-book-youll-ever-need.md",
  "authors": [
    {
      "name": "Malcolm S Thaler",
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  "original_title": null,
  "original_language": null,
  "first_published": "2026-01-01",
  "genres": [
    {
      "code": "MB",
      "heading": "Medycyna – zagadnienia ogólne"
    }
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  "series": [],
  "cover": "https://quivercdn.com/covers/lippincott/malcolm-s-thaler/the-only-ekg-book-youll-ever-need_978-19-7529-344-4-4a6163b6.webp?v=2026-08-25%2003%3A32%3A39",
  "description": "Ideal for readers at all levels, The Only EKG Book You`ll Ever Need, 11th Edition, is a clear, concise guide to EKG use in everyday practice. Dr. Malcolm S. Thaler`s bestselling text is a go-to resource for students, residents, fellows, and practitioners, as well as NPs, PAs, and EKG...",
  "editions": [
    {
      "title": "The Only EKG Book You'll Ever Need",
      "subtitle": null,
      "url": "https://www.kolczanksiazek.pl/malcolm-s-thaler/the-only-ekg-book-youll-ever-need/9781975293444",
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      "isbn": "978-19-7529-344-4",
      "pages": null,
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