Classification
300 - Social sciences
333 - Economics of land & energy
360 - Social problems & services; associations
361 - Social problems & social welfare in general
4
000 - Computer science, information & general works
2
320 - Political science
2
364 - Criminology
2
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
330 - Economics
1
576 - Genetics & evolution
1
610 - Medicine & health
1
900 - History & geography
1