Classification
320 - Political science
333 - Economics of land & energy
11
330 - Economics
10
363 - Other social problems & services
9
630 - Agriculture & related technologies
7
551 - Geology, hydrology & meteorology
6
700 - The arts; fine & decorative arts
6
304 - Factors affecting social behavior
5
600 - Technology
5
580 - Plants (Botany)
4
620 - Engineering & allied operations
4
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
610 - Medicine & health
3
520 - Astronomy & allied sciences
2
720 - Architecture
2
100 - Philosophy & psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
900 - History & geography
1