Dewey Decimal Classification
type: https://bioregistry.io/schema/#0000001
contributor: Charles Tapley Hoyt
description: The Dewey Decimal Classification (DDC) system, devised by library pioneer Melvil Dewey in the 1870s and owned by OCLC since 1988, provides a dynamic structure for the organization of library collections. Now in its 23rd edition, and available in print and Web versions, the DDC is the world's most widely used library classification system.
is part of: bioregistry
0000005: 325.4
0000006: http://dewey.info/class/$1/e23/
0000008: ^(([0-9][0-9]?|[0-9]{3}(-[0-9]{3})?|[0-9]{3}(-[0-9]{3}(:[0-9]+)?)?|[0-9]{3}\.[0-9]+(-[0-9]{3}\.[0-9]+(:[0-9]+)?)?|T[1-9][A-Z]?--[0-9]+(-T[1-9][A-Z]?--[0-9]+(:[0-9]+)?)?|[1-9][A-Z]?--[0-9]+(-[1-9][A-Z]?--[0-9]+(:[0-9]+)?)?)?)$
0000012: false
0000024: https://bioregistry.io/ddc:
0000026: 02nv42w72
0000027: e23
0000029: ddc