A couple questions about my API to convert 10 digit ISBNs to 13 digits pointed out somethings I failed to mention earlier.
First, the API actually works both ways. That is, it identifies and validates both 10 and 13 digit ISBNs on input, and returns both versions in the output. Example: 0811822842 and 978081182284-8.
And, as yet, [...]

Posted October 4, 2006 by Casey Bisson
Categories: Libraries & Networked Information. Tags: api, conversion, converter, international standard book numbers, isbn, isbn-13, isbn1013, libraries, library, web service. Be the first one.

David Kane asked the web4libbers:
Can anyone tell me what the conversion between ISBN-10 and ISBN-13 is, please. I need to write a little conversion program. Anything in PHP, for example.
Answers:
“There is already an online converter: http://www.isbn.org/converterpub.asp;” some pointing at Wikipedia on ISBNs, Bookland, and EANs; John Blyberg’s PHP port of the PERL ISBN-10/13 [...]

Posted October 2, 2006 by Casey Bisson
Categories: Libraries & Networked Information. Tags: bookland, conversion, converter, ean, international standard book numbers, isbn, isbn-13, isbn1013, libraries, library, web service, xisbn. 4 Comments.