Classification
330 - Economics
1,203
320 - Political science
564
610 - Medicine & health
557
658 - General management
335
370 - Education
219
333 - Economics of land & energy
196
340 - Law
167
304 - Factors affecting social behavior
166
300 - Social sciences
143
005 - Computer programming, programs & data
139
338 - Production
129
620 - Engineering & allied operations
119
363 - Other social problems & services
112
600 - Technology
111
332 - Financial economics
105
616 - Diseases
103
331 - Labor economics
96
500 - Natural sciences & mathematics
87
900 - History & geography
87
650 - Management & auxiliary services
86
621 - Applied physics
79
302 - Social interaction
75
380 - Commerce, communications & transportation
75
004 - Data processing & computer science
69
006 - Special computer methods
62
384 - Communications; telecommunication
61
630 - Agriculture & related technologies
58
158 - Applied psychology
55
700 - The arts; fine & decorative arts
50
670 - Manufacturing
49
336 - Public finance
47
342 - Constitutional & administrative law
44
153 - Mental processes & intelligence
43
341 - Law of nations
38
306 - Culture & institutions
34
381 - Commerce
32
301 - Sociology & anthropology
31
364 - Criminology
31
617 - Surgery & related medical specialties
29
000 - Computer science, information & general works
28
530 - Physics
28
346 - Private law
27
551 - Geology, hydrology & meteorology
27
519 - Probabilities & applied mathematics
26
305 - Social groups
24
327 - International relations
24
343 - Military, tax, trade & industrial law
24
170 - Ethics
23
510 - Mathematics
23
577 - Ecology
23
more ...