Dewey Decimal System
Dewey decimal classification
The Dewey Decimal Classification (DDC) System is a system primarily used in libraries to classify books. In general, the system claims to provide a set of categories for all human knowledge. The system consists of a hierarchy of classes. At the top level, there are ten main classes, that are divided into 100 divisions which are sub-divided into 1,000 sections. The system was conceived by Melvil Dewey in 1873 and published in 1876. DDC uses Arabic numerals to number the classes and explicates the semantics of a class and its relation to other classes.
Since its first publication in 1876 by Melvil Dewey , the Dewey Decimal Classification (DDC) has been updated to accommodate changes to the body of human knowledge. The current version, DDC 22, was published in mid-2003  (http://www.oclc.org/dewey/versions/ddc22print/). Currently, the Online Computer Library Center (OCLC) (http://www.oclc.org) of Dublin Ohio owns the...
- 1.Chan LM. Dewey decimal classification: a practical guide. Albany: Forest; 1994.Google Scholar
- 2.Dewey M. Dewey; decimal classification and relative index for libraries, clippings, notes. Boston: Library Bureau; 1891.Google Scholar
- 3.Mitchell JS. Summaries DDC 22: Dewey decimal classification. Dublin: OCLC; 2003.Google Scholar