Classification
330 - Economics
610 - Medicine & health
900 - History & geography
320 - Political science
4
100 - Philosophy & psychology
3
361 - Social problems & social welfare in general
3
370 - Education
3
170 - Ethics
2
300 - Social sciences
2
340 - Law
2
658 - General management
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
200 - Religion
1
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
363 - Other social problems & services
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
600 - Technology
1
620 - Engineering & allied operations
1
780 - Music
1