Classification
330 - Economics
1,784
320 - Political science
1,170
800 - Literature & rhetoric
947
860 - Spanish & Portuguese literatures
868
900 - History & geography
832
370 - Education
379
300 - Social sciences
345
340 - Law
295
658 - General management
265
610 - Medicine & health
180
333 - Economics of land & energy
164
700 - The arts; fine & decorative arts
146
338 - Production
128
304 - Factors affecting social behavior
125
140 - Specific philosophical schools
122
100 - Philosophy & psychology
116
301 - Sociology & anthropology
113
972 - Middle America; Mexico
103
000 - Computer science, information & general works
91
380 - Commerce, communications & transportation
89
363 - Other social problems & services
83
305 - Social groups
79
400 - Language
76
600 - Technology
74
302 - Social interaction
71
331 - Labor economics
70
650 - Management & auxiliary services
58
158 - Applied psychology
55
630 - Agriculture & related technologies
54
306 - Culture & institutions
50
410 - Linguistics
49
780 - Music
48
303 - Social processes
45
336 - Public finance
42
381 - Commerce
42
500 - Natural sciences & mathematics
42
327 - International relations
38
153 - Mental processes & intelligence
33
540 - Chemistry & allied sciences
33
384 - Communications; telecommunication
31
200 - Religion
30
170 - Ethics
25
332 - Financial economics
25
980 - History of South America
25
620 - Engineering & allied operations
21
720 - Architecture
21
576 - Genetics & evolution
20
861 - Spanish poetry
19
308 - [Unassigned]
17
362 - Social welfare problems & services
17
more ...