Classification
330 - Economics
361 - Social problems & social welfare in general
320 - Political science
4
300 - Social sciences
2
360 - Social problems & services; associations
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
340 - Law
1
380 - Commerce, communications & transportation
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1