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