The International Standard Book Number (ISBN) was introduced in 1970 to provide a unique identifier for books. At the time, ISBNs consisted of 10 digits. The basic structure of the ISBN has remained the same over the years, although some changes have been made to accommodate the growing number of books being published.
Val Giordano
Val is a freelance writer and editor with 10+ years of experience. He's been writing about book data management, publishing, technology, and other subjects.