Classification
658 - General management
27
330 - Economics
26
650 - Management & auxiliary services
15
158 - Applied psychology
11
300 - Social sciences
10
302 - Social interaction
10
500 - Natural sciences & mathematics
7
670 - Manufacturing
7
381 - Commerce
6
331 - Labor economics
4
153 - Mental processes & intelligence
3
332 - Financial economics
3
000 - Computer science, information & general works
2
155 - Differential & developmental psychology
1
333 - Economics of land & energy
1
338 - Production
1
384 - Communications; telecommunication
1
640 - Home & family management
1
646 - Sewing, clothing & personal living
1
808 - Rhetoric & collections of literature
1