More Information
The Dewey website contains up-to-date information about the DDC, DDC products and services and DDC licensing. For more information about the structure and application of the Dewey Decimal Classification system, consult the introduction in Volume 1 of DDC 22 (also available online in WebDewey and on the Dewey website). A more in-depth introduction to Dewey Decimal Classification may be found in Dewey Decimal Classification: Principles and Application, 3d ed., by Lois Mai Chan and Joan S. Mitchell (Dublin, Ohio: OCLC, 2003).