= List of ISBN registration groups
{wiki=List_of_ISBN_registration_groups}
The International Standard Book Number (ISBN) system assigns unique identifiers to books and similar media. Each ISBN is composed of several elements, one of which is the registration group identifier, which indicates the country, geographical area, or language community in which the book is published. Here is a brief overview of the main ISBN registration groups: 1. **0 or 1**: English-speaking countries (USA, Canada, UK, Australia) 2.
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