Send a comment on this item to LII: Send a comment on this item to LII staff, who on weekdays will usually reply within 24 hours. Are You Ready for ISBN-13? "On January 1, 2007, the book industry will begin using 13 digit ISBNs [International Standard Book Numbers] to identify all books in supply chain," rather than 10-digit numbers. The site explains why this change is being made, and provides a free online tool to convert an ISBN-10 to an ISBN-13. Also find related material for publishers and librarians. http://www.isbn.org/standards/home/isbn/transition.asp Asterisk * indicates required field. Your Name Your Email Address * We will not sell or provide your email address to anyone else. Comment * Enter the verification code as it is shown in the box below. This helps prevent automated submissions. *