Classification
300 - Social sciences
330 - Economics
650 - Management & auxiliary services
657 - Accounting
658 - General management
140 - Specific philosophical schools
3
170 - Ethics
3
320 - Political science
2
363 - Other social problems & services
2
340 - Law
1
361 - Social problems & social welfare in general
1
370 - Education
1
380 - Commerce, communications & transportation
1
600 - Technology
1
610 - Medicine & health
1