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A Research Guide for Students
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Dewey Decimal Classification System
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 22nd edition, and available in print and Web versions, the DDC is the world’s most widely used library classification system. For ordering Dewey, please visit our secure Web store or use the order form.
The DDC provides meaningful notation in universally recognized Arabic numerals, well-defined categories and hierarchies, and a rich network of relationships among topics
- I Lee
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