Classification
158 - Applied psychology
330 - Economics
65
500 - Natural sciences & mathematics
65
650 - Management & auxiliary services
658 - General management
65
300 - Social sciences
64
302 - Social interaction
64
670 - Manufacturing
64
338 - Production
17
381 - Commerce
13
331 - Labor economics
8
153 - Mental processes & intelligence
6
001 - Knowledge
3
620 - Engineering & allied operations
3
384 - Communications; telecommunication
2
006 - Special computer methods
1
155 - Differential & developmental psychology
1
380 - Commerce, communications & transportation
1