Classification
361 - Social problems & social welfare in general
610 - Medicine & health
000 - Computer science, information & general works
3
330 - Economics
3
320 - Political science
2
360 - Social problems & services; associations
2
370 - Education
2
600 - Technology
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1