Classification
330 - Economics
748
320 - Political science
359
610 - Medicine & health
202
820 - English & Old English literatures
166
340 - Law
158
333 - Economics of land & energy
126
300 - Social sciences
123
616 - Diseases
120
304 - Factors affecting social behavior
85
338 - Production
79
620 - Engineering & allied operations
74
658 - General management
74
577 - Ecology
60
621 - Applied physics
55
363 - Other social problems & services
52
306 - Culture & institutions
51
370 - Education
49
630 - Agriculture & related technologies
48
551 - Geology, hydrology & meteorology
47
900 - History & geography
47
005 - Computer programming, programs & data
41
006 - Special computer methods
41
331 - Labor economics
37
613 - Personal health & safety
33
301 - Sociology & anthropology
32
910 - Geography & travel
32
004 - Data processing & computer science
29
617 - Surgery & related medical specialties
29
380 - Commerce, communications & transportation
28
530 - Physics
28
500 - Natural sciences & mathematics
27
600 - Technology
27
332 - Financial economics
24
650 - Management & auxiliary services
23
660 - Chemical engineering
23
614 - Incidence & prevention of disease
22
664 - Food technology
22
170 - Ethics
21
327 - International relations
21
341 - Law of nations
21
510 - Mathematics
21
519 - Probabilities & applied mathematics
21
520 - Astronomy & allied sciences
20
571 - Physiology & related subjects
20
615 - Pharmacology & therapeutics
20
001 - Knowledge
19
250 - Christian orders & local church
18
541 - Physical chemistry
17
580 - Plants (Botany)
17
612 - Human physiology
16
more ...