Dewey Decimal Classification

The Dewey Decimal System organizes materials on the same subject and on related subjects to make items easier to find on the shelves by using a combination of letters and numbers.

 The Dewey system has ten main classes, which are listed below.

Each of the above classes each have ten divisions. These divisions are further divided--and then further divided. Each division becomes more specific. The more numbers, the more specific the subject. In this way, the Dewey classification system progresses from the general to the specific. For a detailed summary for each number see theDewey Decimal Classification System The decimal place is used to make the number even more specific.