Classification
330 - Economics
192
320 - Political science
98
340 - Law
75
300 - Social sciences
29
630 - Agriculture & related technologies
12
700 - The arts; fine & decorative arts
10
333 - Economics of land & energy
7
361 - Social problems & social welfare in general
6
900 - History & geography
6
363 - Other social problems & services
5
380 - Commerce, communications & transportation
5
000 - Computer science, information & general works
4
600 - Technology
4
100 - Philosophy & psychology
3
576 - Genetics & evolution
3
610 - Medicine & health
3
140 - Specific philosophical schools
2
360 - Social problems & services; associations
2
370 - Education
2
551 - Geology, hydrology & meteorology
2
620 - Engineering & allied operations
2
658 - General management
2
800 - Literature & rhetoric
2
920 - Biography, genealogy & insignia
2
158 - Applied psychology
1
170 - Ethics
1
200 - Religion
1
280 - Christian denominations & sects
1
296 - Judaism
1
336 - Public finance
1
381 - Commerce
1
388 - Transportation; ground transportation
1
414 - Phonology & phonetics
1
550 - Earth sciences
1
580 - Plants (Botany)
1
650 - Management & auxiliary services
1
657 - Accounting
1
720 - Architecture
1
790 - Recreational & performing arts
1