Classification
140 - Specific philosophical schools
330 - Economics
6
650 - Management & auxiliary services
657 - Accounting
6
658 - General management
170 - Ethics
4
300 - Social sciences
3
320 - Political science
3
361 - Social problems & social welfare in general
3
363 - Other social problems & services
3
340 - Law
1
370 - Education
1
380 - Commerce, communications & transportation
1
600 - Technology
1
610 - Medicine & health
1