ISBN

standard identifier for books

unfortunately each edition/version of a book gets a separate number, which means that 1 ISBN will go Out Of Print while another ISBN for the same book is still active - this can break a lot of automated processes

RemoteWikiURL:http://www.amazon.com/gp/search?index=books&linkCode=qs&tag=webs0e0-20&keywords=

ISBN numbers changed Jan1'2005!

• that means lots of human-generated URI links to books (in blogs, etc.) will break (unless the targets of those links, Amazon and Barnes And Noble, support both generations of values, which I suppose they will.)

http://www.publishingbasics.com/2011/03/07/do-i-really-need-a-separate-isbn-for-my-e-book/

http://www.kindleboards.com/index.php?topic=38570.0