Classification
300 - Social sciences
14
330 - Economics
650 - Management & auxiliary services
658 - General management
12
380 - Commerce, communications & transportation
8
384 - Communications; telecommunication
7
302 - Social interaction
6
158 - Applied psychology
4
331 - Labor economics
3
338 - Production
3
500 - Natural sciences & mathematics
2
150 - Psychology
1
153 - Mental processes & intelligence
1
320 - Political science
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
381 - Commerce
1
600 - Technology
1
610 - Medicine & health
1
657 - Accounting
1
670 - Manufacturing
1
700 - The arts; fine & decorative arts
1