Classification
170 - Ethics
300 - Social sciences
330 - Economics
7
650 - Management & auxiliary services
657 - Accounting
7
140 - Specific philosophical schools
5
320 - Political science
5
363 - Other social problems & services
4
658 - General management
3
380 - Commerce, communications & transportation
2
600 - Technology
2
340 - Law
1
361 - Social problems & social welfare in general
1
370 - Education
1
610 - Medicine & health
1