Classification
300 - Social sciences
360 - Social problems & services; associations
361 - Social problems & social welfare in general
21
364 - Criminology
16
340 - Law
6
900 - History & geography
5
000 - Computer science, information & general works
4
320 - Political science
4
100 - Philosophy & psychology
3
301 - Sociology & anthropology
3
330 - Economics
3
600 - Technology
3
140 - Specific philosophical schools
2
170 - Ethics
2
200 - Religion
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
304 - Factors affecting social behavior
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
610 - Medicine & health
1
620 - Engineering & allied operations
1