Classification
300 - Social sciences
658 - General management
19
330 - Economics
14
302 - Social interaction
10
670 - Manufacturing
8
500 - Natural sciences & mathematics
7
331 - Labor economics
6
158 - Applied psychology
4
338 - Production
4
001 - Knowledge
3
650 - Management & auxiliary services
3
000 - Computer science, information & general works
2
005 - Computer programming, programs & data
2
384 - Communications; telecommunication
2
153 - Mental processes & intelligence
1
305 - Social groups
1
800 - Literature & rhetoric
1