The books are arranged on the shelves by subject according to the Dewey Decimal Classification system. Each book is given a shelf number, which consists of numbers and letters.
The Dewey numbers relate to broad subject areas.
000-99 |
Computer science, information & general works |
100-199 |
Philosophy & psychology |
200-299 |
Religion |
300-399 |
Social sciences |
400-499 |
Language |
500-599 |
Science |
600-699 |
Technology |
700-799 |
Arts & recreation |
800-899 |
Literature |
900-999 |
History & geography |