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Home » What All Libraries Have » The Dewey Decimal System (DDC)

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The Dewey Decimal System (DDC)

How to read call numbers in a public library

DDC works well in smaller libraries, but it isn't specific enough for large, diverse collections.

DDC has ten major classes
000 Generalities
100 Philosophy/Psychology
200 Religion
300 Social Sciences
400 Language
500 Natural Sciences/Mathematics
600 Technology
700 The Arts
800 Literature/Rhetoric
900 Geography/History

Tips for finding books using Dewey Decimal call numbers:

The following books are in the correct order.

First book, 813.04 O38. Second book, 813.04 O4. Third book, 813.13 I32. Fourth book, 813.2 B35.

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