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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 number before the decimal point is always treated as a whole number.
- The numbers following the decimal point are treated as decimals.
- If another letter appears after the decimal number, it is also arranged first by letter and then by decimal number.
The following books are in the correct order.
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