Classification
361 - Social problems & social welfare in general
610 - Medicine & health
4
320 - Political science
3
700 - The arts; fine & decorative arts
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
330 - Economics
2
333 - Economics of land & energy
2
340 - Law
2
370 - Education
2
000 - Computer science, information & general works
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
362 - Social welfare problems & services
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
900 - History & geography
1