Classification
100 - Philosophy & psychology
3
140 - Specific philosophical schools
170 - Ethics
2
200 - Religion
1
300 - Social sciences
3
320 - Political science
6
330 - Economics
4
333 - Economics of land & energy
5
340 - Law
2
363 - Other social problems & services
11
500 - Natural sciences & mathematics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
12
600 - Technology
2
610 - Medicine & health
1
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
4
720 - Architecture
1
800 - Literature & rhetoric
1
900 - History & geography
2