What is an ISBN?
An ISBN is the 10-digit number code on the back of all books printed since 1970. ISBN stands for: International Standard Book Number. As of 2007, all books will be printed with the new 13-digit ISBN code. According to ISBN.org, the two codes will exist side-by-side as the 10-digit codes are slowly retired. A 978- preface may be added to current 10-digit codes to “modernize” them. Whether that actually happens across the board is yet to be seen.
What do the numbers mean?
The new 3-digit preface number means: Hey, we ran out of combinations!
On the standard 10-digit ISBN:
Part I. Country or Region Identifier
Part II. Publisher Identifier
Part III. Title/Edition Identifier
Part IV. ISBN Verification Identifier (final digit)
What is a Verification Identifier?
It is something boring and complex you can research on your own.
Related Facts
The SBN (Standard Book Number) predates ISBN by four years. It was originated in the UK. Similar to the dual 10-digit and 13-digit ISBN codes found in current publications, some early-ISBN books include both the ISBN and SBN numbers.
The ISSN (International Standard Serial Number) is a similar devise used to categorize magazines.
Resources:
www.ISBN.org
http://en.wikipedia.org/wiki/Isbn
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