UWICE Digital Repository
How to find books
The library uses the Dewey Decimal Classification (DDC) system to arrange the books
on the shelves.It is used in many libraries around the world, and in Bhutan most of the
colleges under the Royal University of Bhutan, and Higher Secondary Schools use it for classifying their books.
It allows items about the same subject to be shelved together for easy
retrieval. Follow the following example to find your book.
The DDC is a hierarchical number system that organizes all human knowledge into ten main classes. These are:
| 000 |
Computer science, information & general works |
| 100 |
Philosophy |
| 200 |
Religion |
| 300 |
Sciences |
| 400 |
Languages |
| 500 |
Sciences |
| 600 |
Technology |
| 700 |
Arts & recreation |
| 800 |
Literature |
| 900 |
History & geography |
Each main class is then divided into ten sub-classes. For instance:
| 500 |
Science |
| 510 |
Mathematics |
| 520 |
Astronomy |
| 530 |
Physics |
| 540 |
Chemistry |
| 550 |
Earth sciences & geology |
| 560 |
Fossils & prehistoric life |
| 570 |
Life sciences; biology |
| 580 |
Plants (Botany) |
| 590 |
Animals (Zoology) |
Each sub-class is again divided into specific topics. For instance:
| 570 |
Life sciences; biology |
| 571 |
Physilogy & related subjects |
| 572 |
Biochemistry |
| 573 |
Specific physiological systems in animals |
| 574 |
Uassigned |
| 575 |
Specific parts of & systems in plants |
| 576 |
Genetics & evolution |
| 577 |
Ecology |
| 578 |
Natural history of organisms |
| 579 |
Microorganisms, fungi & algae |
Each of these topics may be further divided into more specific topics, and so does the numbering. After the first three digits, the dicimal point is used to segregate the specific subjects. For example:
| Ecology |
| 577.3 |
Forest ecology |
| 577.34 |
Rain forest ecology |
