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What Is an ISBN Number?
The International Standard Book Number (ISBN) is a unique identifying number for books published around the world. Based on a coding system developed by a British statistician, an ISBN is assigned to each edition of a book. However, the ISBN is not... More »
Difficulty: Easy
Source: www.ehow.com

en.wikipedia.org/wiki/International_Standard_Book_Number

For example, for an ISBN-10 of 0-306-40615-2: .... the ISBN is less than 11 digits long, and because 11 is a prime number.

www.isbn.org/faqs_general_questions

Does the ISBN-13 have any meaning imbedded in the numbers?

www.isbn-international.org/content/what-isbn

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 ...

www.abebooks.com/books/search-number-code-10-13-digit/ISBN.shtml

What is an ISBN? ISBN is the acronym for International Standard Book Number. This 10 or 13-digit number identifies a specific book, an edition of a book, or a ...

www.thebookdesigner.com/2010/03/isbn-for-self-publishers-answers-to-20-of-your-questions

Mar 17, 2010 ... ISBN also identifies the publisher of the book. It is the standard ID number used to identify books by booksellers, libraries, book wholesalers ...

www.thebookdesigner.com/2009/09/self-publishing-basics-isbn

Sep 8, 2009 ... The four parts of the ISBN or International Standard Book Number for publishers and self-publishers.

www.isbn-us.com/faqs

Information regarding ISBN number for books. Complete breakdown of ISBN number system and barcode.

www.bowker.com/products/ISBN-US.html

The most important identifier your book can have is the ISBN (International Standard Book Number). Bowker is the ONLY official U.S. ISBN Agency.