Classification
658 - General management
1,659
330 - Economics
1,553
338 - Production
631
650 - Management & auxiliary services
265
320 - Political science
198
333 - Economics of land & energy
185
158 - Applied psychology
158
331 - Labor economics
147
006 - Special computer methods
142
300 - Social sciences
133
370 - Education
103
600 - Technology
101
302 - Social interaction
99
332 - Financial economics
98
500 - Natural sciences & mathematics
94
670 - Manufacturing
91
304 - Factors affecting social behavior
90
381 - Commerce
73
610 - Medicine & health
68
000 - Computer science, information & general works
63
620 - Engineering & allied operations
52
380 - Commerce, communications & transportation
48
700 - The arts; fine & decorative arts
48
153 - Mental processes & intelligence
46
306 - Culture & institutions
46
363 - Other social problems & services
44
303 - Social processes
42
301 - Sociology & anthropology
32
174 - Occupational ethics
31
337 - International economics
29
004 - Data processing & computer science
28
005 - Computer programming, programs & data
26
800 - Literature & rhetoric
24
170 - Ethics
23
384 - Communications; telecommunication
22
630 - Agriculture & related technologies
22
305 - Social groups
21
621 - Applied physics
21
140 - Specific philosophical schools
19
336 - Public finance
19
371 - Schools & their activities; special education
19
001 - Knowledge
17
340 - Law
16
361 - Social problems & social welfare in general
16
900 - History & geography
16
100 - Philosophy & psychology
15
339 - Macroeconomics & related topics
15
657 - Accounting
15
003 - Systems
14
659 - Advertising & public relations
10
more ...