Classification
658 - General management
331 - Labor economics
43
330 - Economics
20
300 - Social sciences
19
302 - Social interaction
17
650 - Management & auxiliary services
13
158 - Applied psychology
10
150 - Psychology
4
155 - Differential & developmental psychology
3
001 - Knowledge
2
338 - Production
2
500 - Natural sciences & mathematics
2
670 - Manufacturing
2
011 - Bibliographies
1
153 - Mental processes & intelligence
1
291 - [Unassigned]
1
361 - Social problems & social welfare in general
1