Can be used for both ISBN validation, translating, formatting and ISBN data lookups.
Lookups currently use Amazon to fetch ISBN data and populate a Book object.
This library is very much "in development" and will contain bugs, incomplete code and unfinished functionality.
Some code samples for ISBN code validating, translating, and formatting taken from: https://github.com/Fale/isbn
References: Comparison between different ISBN lookup services: http://journal.code4lib.org/articles/8715 OCLC ISBN Resource: http://www.oclc.org/developer/develop/web-services/xid-api/xisbn-resource.en.html