Lissi, It doesn't work that way. You can't convert a 13 digit ISBN to 10 just by leaving off 3 of the digits. If your book doesn't have a 10 digit ISBN, then you'll not be able to enter an ISBN on the form. ISBNs are optional, though, so don't worry about it. Gerald -----Original Message----- From: bksvol-discuss-bounce@xxxxxxxxxxxxx [mailto:bksvol-discuss-bounce@xxxxxxxxxxxxx] On Behalf Of Estelnalissi Sent: Thursday, March 01, 2007 3:54 PM To: bksvol-discuss@xxxxxxxxxxxxx Subject: [bksvol-discuss] 13 to 10, ISBN subtract from which end? Dear Booksharians, I've encountered my first book with a 13 digit ISBN number and remember hearing that Bookshare only processes 10 digits. Do I remove the first or last three digits of a 13 figure ISBN number? Thanks, Always with love, Lissi To unsubscribe from this list send a blank Email to bksvol-discuss-request@xxxxxxxxxxxxx put the word 'unsubscribe' by itself in the subject line. To get a list of available commands, put the word 'help' by itself in the subject line. To unsubscribe from this list send a blank Email to bksvol-discuss-request@xxxxxxxxxxxxx put the word 'unsubscribe' by itself in the subject line. To get a list of available commands, put the word 'help' by itself in the subject line.