Walker Library

The Dewey Decimal System, page 2

About Call Numbers

The Dewey Decimal System

An Example

Filing Order

Cutter Numbers

Literary Criticism

Biographies

Last but Not Least

The Dewey Decimal Classification System:

The Dewey Decimal system is used in more than 200,000 libraries throughout the world and it has been translated into 35 languages. Using numbers and letters, the system coordinates materials on the same subject and on related subjects to make items easier to find on the shelves. All knowledge is divided into ten main classes, which are listed below.

  • 000 Generalities
  • 100 Philosophy and Psychology
  • 200 Religion
  • 300 Social Science
  • 400 Language
  • 500 Natural Science and Mathematics
  • 600 Technology (Applied Sciences)
  • 700 Arts
  • 800 Literature
  • 900 Geography and History

These ten classes each have ten divisions. These divisions are further divided--and then further divided, with each division becoming more specific. The more numbers, the more specific the subject. The decimal place is used to make the number even more specific. Click here for a detailed summary of each number.

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