Dewey Services: Improve the organization of your materials | OCLC

Organize your materials with the world's most widely used library classification system. Organize your collection Libraries big and small the world over use the Dewey Decimal Classification® (DDC) system to help make sense of today's complex library collections. Learn more about WebDewey Break down language barriers The DDC system has been translated into numerous languages and serves library user

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WebDewey 2.0: an overview

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参考文献として

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米国では、公共図書館・学校図書館の95％がDDCをつかっている。世界では135カ国20万館がDDCを使っている。