Classification
330 - Economics
10
658 - General management
9
300 - Social sciences
6
302 - Social interaction
5
331 - Labor economics
5
500 - Natural sciences & mathematics
5
670 - Manufacturing
4
000 - Computer science, information & general works
1
305 - Social groups
1
381 - Commerce
1
384 - Communications; telecommunication
1
650 - Management & auxiliary services
1