Classification
330 - Economics
582
320 - Political science
356
610 - Medicine & health
186
820 - English & Old English literatures
166
340 - Law
157
333 - Economics of land & energy
119
300 - Social sciences
118
616 - Diseases
112
304 - Factors affecting social behavior
84
338 - Production
76
620 - Engineering & allied operations
69
658 - General management
62
577 - Ecology
60
306 - Culture & institutions
51
006 - Special computer methods
50
621 - Applied physics
48
363 - Other social problems & services
47
370 - Education
47
630 - Agriculture & related technologies
47
551 - Geology, hydrology & meteorology
46
900 - History & geography
45
005 - Computer programming, programs & data
40
331 - Labor economics
35
613 - Personal health & safety
33
301 - Sociology & anthropology
32
910 - Geography & travel
31
004 - Data processing & computer science
28
380 - Commerce, communications & transportation
28
500 - Natural sciences & mathematics
27
530 - Physics
27
617 - Surgery & related medical specialties
27
600 - Technology
26
650 - Management & auxiliary services
23
660 - Chemical engineering
23
614 - Incidence & prevention of disease
22
664 - Food technology
22
003 - Systems
21
327 - International relations
21
332 - Financial economics
21
341 - Law of nations
21
519 - Probabilities & applied mathematics
21
170 - Ethics
20
510 - Mathematics
20
520 - Astronomy & allied sciences
20
615 - Pharmacology & therapeutics
20
001 - Knowledge
19
571 - Physiology & related subjects
19
250 - Christian orders & local church
18
541 - Physical chemistry
17
580 - Plants (Botany)
17
more ...