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The International <b>ISBN</b> Agency
An ISBN is an International Standard Book Number. ISBNs were 10 digits in length up to the end of December 2006, but since 1 January 2007 they now always consist of 13 digits. ISBNs are calculated using a specific mathematical formula and include a check digit to validate the number.
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The ISBN is a unique identifier for a book or other book-like product (such as an audiobook) that specifies its format, edition, and publisher.
Bowker is the official source for ISBNs in the United States. An ISBN uniquely identifies your book, and facilitates the sale of your book to bookstores.
Using an ISBN is the most accurate and reliable way to search for a book. Use our search engine to find book information and the best prices for books.
The International Standard Book Number (ISBN) is a numeric commercial book identifier that is intended to be unique.
The most important identifier your book can have is the ISBN (International Standard Book Number). Bowker is the ONLY official U.S. ISBN Agency.
An ISBN identifies a book's edition, publisher, and physical properties like trim size, page count, and binding type.
03‏/06‏/2021 · ISBN is the acronym for International Standard Book Number. This 10 or 13-digit number identifies a specific book, an edition of a book, ...
Information regarding ISBN number for books. Complete breakdown of ISBN number system and barcode.
28‏/06‏/2022 · International Standard Book Number (ISBN) is a national and international standard identification number for uniquely identifying books ...