Changes

'''International Standard Book Number''' (ISBN) is a number assigned to professionally published books in the modern era. Modern book indexes available on the Internet usually offer the option of finding specific books via their ISBN.

'''International Standard Book Number''' (ISBN) is a number assigned to professionally published books in the modern era. Modern book indexes available on the Internet usually offer the option of finding specific books via their ISBN.<ref>Bradley, Philip (1992). {{cite web|url= http://www.theindexer.org/files/18-1/18-1_025.pdf |title=Book numbering: The importance of the ISBN }}. ''The Indexer.'' '''18''' (1): 25–26.</ref>

==References==

==References==

* http://www.isbn.org/

* http://www.isbn.org/

* http://www.isbnsearch.org/

* http://www.isbnsearch.org/

[[Category:Media]]

[[Category:Media]]