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In order to sell your book through retail bookstores you'll need an International Standard Book Number (ISBN). We will do all the paperwork that's required for you to be assigned an ISBN. It could be one for your current book or many for future use. We also provide you with a scan-able bar code that will print on the back cover. This is the bar code that bookstores scan when they sell your book. It will include your ISBN and pricing information.

The International Standard Book Number (ISBN) is a 13-digit number that uniquely identifies books and book-like products published internationally.

The purpose of the ISBN is to establish and identify one title or edition of a title from one specific publisher and is unique to that edition, allowing for more efficient marketing of products by booksellers, libraries, universities, wholesalers and distributors.

Every ISBN consists of thirteen digits and whenever it is printed it is preceded by the letters ISBN. The thirteen-digit number is divided into five parts of variable length, each part separated by a hyphen.

The five parts of an ISBN are as follows:

The current ISBN-13 will be prefixed by "978"

Group or country identifier which identifies a national or geographic grouping of publishers;

Publisher identifier which identifies a particular publisher within a group;

Title identifier which identifies a particular title or edition of a title;

Check digit is the single digit at the end of the ISBN which validates the ISBN.

In the case of the check digit, the last digit of the ISBN, the upper case X can appear. The method of determining the check digit for the ISBN is the modulus 11 with the weighting factors 10 to 1. The Roman numeral X is used in lieu of 10 where ten would occur as a check digit.

Click here for more information about ISBN then you ever wanted to know.