Classification
330 - Economics
361 - Social problems & social welfare in general
320 - Political science
5
140 - Specific philosophical schools
3
333 - Economics of land & energy
3
610 - Medicine & health
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
658 - General management
2
700 - The arts; fine & decorative arts
2
170 - Ethics
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
370 - Education
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
600 - Technology
1
650 - Management & auxiliary services
1