Classification
330 - Economics
1,507
320 - Political science
672
900 - History & geography
302
340 - Law
217
300 - Social sciences
160
370 - Education
153
338 - Production
148
820 - English & Old English literatures
140
306 - Culture & institutions
116
333 - Economics of land & energy
111
700 - The arts; fine & decorative arts
108
327 - International relations
99
100 - Philosophy & psychology
98
658 - General management
73
305 - Social groups
72
304 - Factors affecting social behavior
68
200 - Religion
67
800 - Literature & rhetoric
67
140 - Specific philosophical schools
66
301 - Sociology & anthropology
66
610 - Medicine & health
66
337 - International economics
53
363 - Other social problems & services
51
170 - Ethics
49
600 - Technology
49
616 - Diseases
47
342 - Constitutional & administrative law
43
302 - Social interaction
42
341 - Law of nations
42
620 - Engineering & allied operations
42
380 - Commerce, communications & transportation
40
500 - Natural sciences & mathematics
39
332 - Financial economics
37
339 - Macroeconomics & related topics
37
331 - Labor economics
34
510 - Mathematics
34
303 - Social processes
33
364 - Criminology
31
323 - Civil & political rights
30
630 - Agriculture & related technologies
30
230 - Christianity & Christian theology
29
382 - International commerce
29
400 - Language
28
000 - Computer science, information & general works
27
297 - Islam, Babism & Bahai Faith
26
005 - Computer programming, programs & data
25
321 - Systems of governments & states
25
650 - Management & auxiliary services
25
361 - Social problems & social welfare in general
24
621 - Applied physics
24
more ...