Book Industry Standards and Communications. The BISAC standard was developed by BISG (Book Industry Study Group), an American organisation whose mission is to simplify the logistics for different actors in the book industry (publishers, sellers, library). This classification comprises more than 3000 different codes and is expected by a growing number of sellers, including the iBookstore of Apple. Compare CLIL, Dewey and Electre.
CLIL (Commission de Liaison Interprofessionnelle du Livre). European standard for book classification. Compare BISAC, Dewey and Electre.
The Dewey Decimal Classification (DDC, also called the Dewey Decimal System) is a proprietary system of library classification developed by Melvil Dewey in 1876; it has been greatly modified and expanded through 22 major revisions, the most recent in 2003. This system organizes books on library shelves in a specific and repeatable order that makes it easy to find any book and return it to its proper place. The system is used in 200,000 libraries in at least 135 countries. Compare BISAC, CLIL and Electre.
International Standard Book Number. A unique identifier for a publication. See also the Wikipedia article for a complete definition.