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