Classification
300 - Social sciences
302 - Social interaction
330 - Economics
380 - Commerce, communications & transportation
500 - Natural sciences & mathematics
57
658 - General management
57
670 - Manufacturing
384 - Communications; telecommunication
55
331 - Labor economics
7
381 - Commerce
6
338 - Production
5
808 - Rhetoric & collections of literature
3
006 - Special computer methods
2
153 - Mental processes & intelligence
2
158 - Applied psychology
2
650 - Management & auxiliary services
2
150 - Psychology
1
155 - Differential & developmental psychology
1
620 - Engineering & allied operations
1