网站简介：Guide to used book sales, fairs and other used book events throughout the USA and Canada
网站简介：Enables applications to be made for ISBNs, SANs, and ISMNs in the United States and Puerto Rico, and provides information about the standards.
网站简介：Includes a user's manual, prefix ranges, details of group agencies, publications, reports, and news.
网站简介：Information and tools for using International Standard Book Numbers. Scan them with a CueCat, look them up, or search them.