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Dewey® Services

A legacy of helping libraries

Since the publication of its first edition in 1876, the Dewey Decimal Classification® (DDC) system has crossed many milestones. Many of these milestones have advanced the organization of library collections to help librarians meet their users' information needs more efficiently.

1876 A Classification and Subject Index for Cataloguing and Arranging Books and Pamphlets of a Library—the first edition of the DDC—is published anonymously in Amherst, Massachusetts.
1885 Second edition of the DDC is published under Melvil Dewey's name.
1900 The first abridged edition of the DDC is published.
1911 The seventh edition of the DDC is published, which is the first to carry the Forest Press imprint.
1916 The Decimal Classification Advisory Committee—the American Library Association's (ALA) first advisory committee—is appointed.
1923 The DDC editorial office moves to the Library of Congress in Washington, DC.
1930 The Library of Congress begins to print Dewey numbers on catalog cards.
1931 Melvil Dewey, creator of the DDC, dies December 26 at age 80.
1937 The Decimal Classification Committee, a forerunner to the present-day Dewey Decimal Classification Editorial Policy Committee, is established.
1953 The Dewey Decimal Classification Editorial Policy Committee is reconstituted to represent the American Library Association, Forest Press and the Library of Congress to guide to editorial development of the DDC.
1958 The 16th edition of the DDC is published, which is the first to be edited under an agreement between the Library of Congress and Forest Press.
1988 Forest Press, based in Albany, New York, becomes a division of OCLC.
1993 OCLC Forest Press publishes Electronic Dewey, the first library classification scheme in electronic form.
1996 The 21st edition of the DDC and Dewey for Windows® are published, which is the first time print and electronic formats are published simultaneously.
1999 The OCLC Forest Press office moves from Albany, New York, to OCLC headquarters in Dublin, Ohio; three years later, the Forest Press imprint is retired.
2000 WebDewey® in CORC is published.
2002 WebDewey and Abridged WebDewey are published.
2003 The 22nd edition of the DDC is published.
2004 The 14th edition of the Abridged DDC is published.
2011 WebDewey 2.0 is released.
2011 The 23rd Edition of the DDC is published.
2012 The 15th Abridged Edition of the of the DDC is published.

La Dewey Decimal Classification (DDC) est le système le plus utilisé à travers le monde pour l'organisation des collections des bibliothèques. La DDC est régulièrement mise à jour pour améliorer la recherche de différents sujets dans plusieurs langues. Sa facilité d'utilisation permet d'accroître rapidement et efficacement la visibilité de vos documents.


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Le blog Dewey est une excellente source d'informations sur les nouveautés et les problèmes de classification, et offre aussi des ressources DDC intéressantes et insolites. C’est également un moyen pratique de faire part de vos commentaires directement aux éditeurs du système afin de contribuer à façonner l’avenir de la DDC.

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Tous les droits d’auteur du système de classification décimale Dewey sont la propriété d’OCLC.
Dewey, Classification décimale Dewey, CDD, DDC, OCLC et WebDewey sont des marques déposées d'OCLC.