Enter an ISBN, OCLC#, UPC, or ISSN
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.
OCLC assigns a unique number to each bibliographic record input into WorldCat. OCLC numbers vary in length from 1 to 9 digits. You can enter an OCLC number with or without leading zeros. For example:
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 UPC appears as a barcode symbol with 12 digits printed below it. Hyphens or spaces usually separate the elements of the
number on the item. The code has three basic parts:
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.
An ISSN consists of eight digits in two groups of four, separated by a hyphen. You can enter an ISSN with or
without a hyphen or leading zeros as shown below:
Enter a Title, an Author, or both.
Enter a FAST Subject Heading
is a controlled vocabulary based on the Library of Congress Subject
Headings (LCSH). FAST headings are categorized into seven subject
facets and one form/genre facet: Topic, Place, Time, Event, Person,
Corporate body, Title of work, and Form/Genre. FAST headings provide
additional subject information about a work and enable you to search
the Classify database by subject.
To learn more about FAST, please visit the FAST Project Page on OCLC.org
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