Classification
000 - Computer science, information & general works
1
100 - Philosophy & psychology
2
140 - Specific philosophical schools
1
300 - Social sciences
2
301 - Sociology & anthropology
2
320 - Political science
340 - Law
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
610 - Medicine & health
900 - History & geography