Inserts links in non-US Amazon websites to link ISBN number to US website

Provides a link to search Cambridge University's libraries wherever an ISBN or ISSN is displayed.

looks up keywords to extract ISBN from eFollet college bookstores

Extracts and links ( ISBNs ) from the UCLA bookstore

Display the availability of a book in the San Francisco Peninsula (CA, USA) Library System on amazon.com, other bookstores and wikipedia book pages