Classification
153 - Mental processes & intelligence
330 - Economics
658 - General management
9
300 - Social sciences
7
381 - Commerce
5
650 - Management & auxiliary services
5
302 - Social interaction
3
338 - Production
3
500 - Natural sciences & mathematics
3
384 - Communications; telecommunication
2
659 - Advertising & public relations
2
670 - Manufacturing
2
150 - Psychology
1
331 - Labor economics
1
370 - Education
1
380 - Commerce, communications & transportation
1
519 - Probabilities & applied mathematics
1