Dewey Decimal Classification/Catalogs
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Dewey Decimal Classification divides knowledge into ten main discipline areas, which are represented by ten classes. These ten classes are called the First Summary.
First Summary
- 000 Computer science, information, and general works
- 100 Philosophy and psychology
- 200 Religion
- 300 Social sciences
- 400 Language
- 500 Science
- 600 Technology
- 700 Arts and recreation
- 800 Literature
- 900 History and geography