Classification
330 - Economics
439
658 - General management
305
338 - Production
231
381 - Commerce
141
302 - Social interaction
138
331 - Labor economics
127
332 - Financial economics
93
500 - Natural sciences & mathematics
89
300 - Social sciences
78
006 - Special computer methods
77
000 - Computer science, information & general works
42
320 - Political science
38
670 - Manufacturing
37
303 - Social processes
33
304 - Factors affecting social behavior
28
384 - Communications; telecommunication
24
620 - Engineering & allied operations
24
659 - Advertising & public relations
23
650 - Management & auxiliary services
22
158 - Applied psychology
20
339 - Macroeconomics & related topics
20
337 - International economics
19
900 - History & geography
19
001 - Knowledge
18
153 - Mental processes & intelligence
14
005 - Computer programming, programs & data
13
333 - Economics of land & energy
13
004 - Data processing & computer science
11
364 - Criminology
11
745 - Decorative arts
11
363 - Other social problems & services
9
600 - Technology
9
305 - Social groups
8
519 - Probabilities & applied mathematics
8
382 - International commerce
7
796 - Athletic & outdoor sports & games
7
306 - Culture & institutions
6
780 - Music
6
170 - Ethics
5
336 - Public finance
5
340 - Law
5
368 - Insurance
5
380 - Commerce, communications & transportation
5
070 - News media, journalism & publishing
4
301 - Sociology & anthropology
4
362 - Social welfare problems & services
4
630 - Agriculture & related technologies
4
770 - Photography, photographs & computer art
4
341 - Law of nations
3
791 - Public performances
3
more ...