Classification
330 - Economics
320 - Political science
40
363 - Other social problems & services
17
700 - The arts; fine & decorative arts
13
333 - Economics of land & energy
11
900 - History & geography
9
000 - Computer science, information & general works
7
630 - Agriculture & related technologies
6
140 - Specific philosophical schools
4
300 - Social sciences
4
340 - Law
3
414 - Phonology & phonetics
3
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
160 - Logic
2
540 - Chemistry & allied sciences
2
580 - Plants (Botany)
2
600 - Technology
2
658 - General management
2
100 - Philosophy & psychology
1
170 - Ethics
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
332 - Financial economics
1
381 - Commerce
1
610 - Medicine & health
1
612 - Human physiology
1
800 - Literature & rhetoric
1