Classification
330 - Economics
16
320 - Political science
11
519 - Probabilities & applied mathematics
10
340 - Law
6
820 - English & Old English literatures
4
304 - Factors affecting social behavior
3
004 - Data processing & computer science
2
300 - Social sciences
2
500 - Natural sciences & mathematics
2
510 - Mathematics
2
616 - Diseases
2
620 - Engineering & allied operations
2
900 - History & geography
2
005 - Computer programming, programs & data
1
006 - Special computer methods
1
153 - Mental processes & intelligence
1
301 - Sociology & anthropology
1
302 - Social interaction
1
306 - Culture & institutions
1
331 - Labor economics
1
333 - Economics of land & energy
1
338 - Production
1
363 - Other social problems & services
1
511 - General principles of mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
570 - Life sciences; biology
1
591 - Specific topics in natural history
1
613 - Personal health & safety
1
614 - Incidence & prevention of disease
1
621 - Applied physics
1
658 - General management
1
809 - History, description & criticism
1
910 - Geography & travel
1