An Experimental Classification Service
Enter an ISBN, OCLC#, UPC, or ISSN Standard Number: An ISBN is a unique number assigned to an item by its publisher. Each ISBN is a 10 or 13 digit number. Thirteen-digit ISBNs must begin with either 978 or 979. Enter ISBNs with our without hyphens. For example; OCLC assigns a unique number to each bibliographic record input into WorldCat. The Universal Product Code (UPC) is a barcode symbol that is used to track trade items in stores (e.g., audio and video products). The first digit is the Number System Character (NSC) which appears on the left side of the symbol outside of the bars. Enter all digits found on the item (e.g., 008817006925). An ISSN is a standardized international code which allows the identification of a serial publication.
Related: Cataloging Tools