Classification
300 - Social sciences
330 - Economics
10
302 - Social interaction
9
500 - Natural sciences & mathematics
9
658 - General management
9
670 - Manufacturing
7
338 - Production
4
381 - Commerce
4
153 - Mental processes & intelligence
1
332 - Financial economics
1
362 - Social welfare problems & services
1
620 - Engineering & allied operations
1