AddALL Book Search Price Comparison
Use 10 or 13-digit ISBN to find book information and the best prices from various online bookstores.
ISBN(International Standard Book Number) is a 10 or 13-digit unique identifier for books found on the back cover or copyright page. 1970-2007 each published book has a 10-digit format of 9-digit numeric + [1-digit numeric or character "X" check digit], for example, 0-936385-405, 0-8044-2957-X.
FYI "X" actually means "10" in ISBN, and you, as a book buyer, could ignore all the hyphens "-".
On Jan 1, 2007, they began the changeover to 13 digits number starting with the prefix "978" or "979", for instance, "9780804429573". If you find both 10 and 13-digit ISBN number on the book cover, don’t worry, both are valid to use. Use either one in the book price comparison for the cheapest books
An ISBN refers to a specific edition of books. Searching by ISBN number, you will get the correct book edition, paperback or hardcover, large or regular print, printed country, language, e-book, audiobook, or paper book. For instance, a student should use ISBN to find the correct edition of textbooks.
There are five parts to an ISBN number