Classification
500 - Natural sciences & mathematics
7
302 - Social interaction
5
331 - Labor economics
4
658 - General management
4
303 - Social processes
3
330 - Economics
3
612 - Human physiology
3
128 - Humankind
2
158 - Applied psychology
2
170 - Ethics
2
153 - Mental processes & intelligence
1
300 - Social sciences
1
306 - Culture & institutions
1
370 - Education
1
384 - Communications; telecommunication
1
650 - Management & auxiliary services
1
745 - Decorative arts
1