The Dewey Decimal Classification (DDC) system is a general knowledge organization 
tool that is continuously revised to keep pace with knowledge. The system was 
conceived by Melvil Dewey in 1873 and first published in 1876. The DDC is published 
by OCLC Online Computer Library Center, Inc. OCLC owns all copyright rights in the 
Dewey Decimal Classification, and licenses the system for a variety of uses.&nbsp;The DDC is the most widely used classification system in the world. Libraries in more 
than 140 countries use the DDC to organize and provide access to their collections, 
and DDC numbers are featured in the national bibliographies of more than 60 
countries. Libraries of every type apply Dewey numbers on a daily basis and share 
these numbers through a variety of means (including WorldCat, the OCLC Online 
Union Catalog). Dewey is also used for other purposes, e.g., as a browsing 
mechanism for resources on the web.&nbsp;The DDC has been translated into over thirty languages. Translations of the latest 
edition of the DDC are completed, planned, or underway in Arabic, French, German, 
Italian, Norwegian, Spanish, Swedish, and Vietnamese.Volume 1&nbsp;(A) Introduction: A description of the DDC and how to use it&nbsp;(B) Glossary: Short definitions of terms used in the DDC&nbsp;(C) Index to the Introduction and Glossary&nbsp;(D) Manual: A guide to the use of the DDC that is made up primarily of extended 
discussions of problem areas in the application of the DDC. Information in the 
Manual is arranged by the numbers in the tables and schedules.&nbsp;(E) Tables: Six numbered tables of notation that can be added to class numbers to 
provide greater specificity

Dewey Decimal Classification and Relative Index, Edition 23 (Volume 1) PDF

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