Posted: January 25, 2020 at 9:42 pm TWG Source The End of 10-Digit ISBNs Bowker, the company that provides ISBNs (International Standard Book Numbers), has announced plans to introduce a new prefix, 979, for its 13-digit identifiers, because the high demand… Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.