Classification
140 - Specific philosophical schools
2
300 - Social sciences
2
330 - Economics
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
600 - Technology
658 - General management
000 - Computer science, information & general works
1
170 - Ethics
1
320 - Political science
1
650 - Management & auxiliary services
1
657 - Accounting
1