Swedish library classification system

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The Swedish library classification system, (Swedish: Klassifikationssystem för svenska bibliotek), or SAB system (SAB-systemet) is a library classification system for use in many public, school, and research libraries in Sweden. It primarily classifies books but is also used for other media, such as audio and video recordings. The first edition of the system was released in 1921 and was based on the classification that was used in the accession catalogs of the scientific libraries of that time. The abbreviation 'SAB' is for "Sveriges Allmänna Biblioteksförening" (Sweden's public library association). SAB merged with Svenska bibliotekariesamfundet (Swedish librarians' association) to form present day Svensk Biblioteksförening (Swedish library association). The SAB system is regularly revised to track developments in new subject areas. The committee for classification systems for Swedish libraries—a part of Svensk Biblioteksförening—promulgates changes, corrections, and usage notes. Larger revisions may cause changes to the whole system and a new version of the classification system is published. The latest, eighth revision was started in 2002 and was put in use in autumn 2006. Both the research libraries (via the National Library of Sweden) and the public libraries decided at the end of 2008 to recommend a transition to the Dewey Decimal system. The research libraries' major reason for transitioning are simplification: large parts of research literature is already classified in this system. For public libraries the concern is to have the same classification system over the entire country. A considerable savings would be enjoyed by both parties by not having to maintain a distinct national classification system.