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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 or For example; OCLC numbers vary in length. Enter an OCLC number without leading zeros. For example: 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: The first digit is the Number System Character NSC which appears on the left side of the symbol outside of the bars.
The next ten digits encoded in the symbol are below the bars. The twelfth digit is a check digit and usually appears at the bottom right of the symbol. Enter all digits found on the item e. 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: FAST headings provide additional subject information about a work and enable you to search the Classify database by subject. OCLC is a non-profit library cooperative, made up of thousands of member libraries throughout the world.
OCLC does not sell books and the actual content is not provided in our database. Libraries add bibliographic records to WorldCat representing books and other items in their collections. The Classify prototype helps librarians apply classification numbers to resources in library collections. Your local library may be able to help you gain access to a resource found through Classify and WorldCat.
Classification schemes are used to provide a systematic arrangement of materials. The classification numbers applied to books and other materials are used to arrange items on shelves and to support browsing, filtering and retrieval of bibliographic information in online systems.
The Classify prototype is designed to help users apply classification numbers. Classify provides a user interface and a machine service for assigning classification numbers and subject headings.
The database is searchable by many of the standard numbers associated with books, magazines, journals, and music and video recordings. Learn More About Classify. Enter ISBNs with our without hyphens. Title: Author:. Displaying 1 to 8 of 8. New to Classification? Comment on the Classify Project.
La Cábala de Predicción
La Cabala de Prediccion