Classification
330 - Economics
650 - Management & auxiliary services
658 - General management
45
158 - Applied psychology
24
331 - Labor economics
15
300 - Social sciences
8
153 - Mental processes & intelligence
6
302 - Social interaction
6
500 - Natural sciences & mathematics
5
670 - Manufacturing
5
150 - Psychology
4
381 - Commerce
3
170 - Ethics
2
001 - Knowledge
1
338 - Production
1
364 - Criminology
1