Classification
140 - Specific philosophical schools
658 - General management
330 - Economics
24
361 - Social problems & social welfare in general
13
300 - Social sciences
12
320 - Political science
10
170 - Ethics
8
650 - Management & auxiliary services
6
657 - Accounting
6
363 - Other social problems & services
4
360 - Social problems & services; associations
3
610 - Medicine & health
3
200 - Religion
2
340 - Law
2
370 - Education
2
380 - Commerce, communications & transportation
2
600 - Technology
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
333 - Economics of land & energy
1