73400320
The identifier "73400320" is commonly associated with the **International Standard Book Number (ISBN)** system, specifically as a **group identifier** for publishers in certain regions. ISBNs are unique numeric commercial book identifiers assigned to books and book-like publications. The number "73400320" is part of the ISBN-10 format, which was widely used before the transition to ISBN-13.
In the ISBN-10 system, the first segment (group identifier) typically identifies the country or language region
ISBNs are used globally to catalog and track books, ensuring accurate identification in libraries, bookstores, and
While the exact publisher associated with "73400320" may vary, it is not a widely recognized or publicly