Classification
300 - Social sciences
330 - Economics
8,316
320 - Political science
5,957
658 - General management
2,145
302 - Social interaction
1,775
500 - Natural sciences & mathematics
1,448
670 - Manufacturing
1,398
900 - History & geography
1,125
630 - Agriculture & related technologies
843
338 - Production
535
331 - Labor economics
518
576 - Genetics & evolution
448
340 - Law
404
381 - Commerce
271
650 - Management & auxiliary services
224
384 - Communications; telecommunication
201
158 - Applied psychology
167
153 - Mental processes & intelligence
148
380 - Commerce, communications & transportation
135
301 - Sociology & anthropology
122
700 - The arts; fine & decorative arts
105
620 - Engineering & allied operations
84
332 - Financial economics
82
333 - Economics of land & energy
72
100 - Philosophy & psychology
70
610 - Medicine & health
68
170 - Ethics
67
370 - Education
55
001 - Knowledge
53
600 - Technology
53
140 - Specific philosophical schools
52
000 - Computer science, information & general works
44
363 - Other social problems & services
44
745 - Decorative arts
42
368 - Insurance
39
200 - Religion
32
304 - Factors affecting social behavior
29
361 - Social problems & social welfare in general
28
150 - Psychology
24
800 - Literature & rhetoric
22
303 - Social processes
21
659 - Advertising & public relations
20
006 - Special computer methods
17
337 - International economics
16
510 - Mathematics
15
155 - Differential & developmental psychology
12
400 - Language
12
551 - Geology, hydrology & meteorology
11
657 - Accounting
11
160 - Logic
10
more ...