Classification
330 - Economics
361 - Social problems & social welfare in general
25
320 - Political science
22
300 - Social sciences
12
610 - Medicine & health
11
900 - History & geography
7
360 - Social problems & services; associations
6
700 - The arts; fine & decorative arts
6
304 - Factors affecting social behavior
4
370 - Education
4
333 - Economics of land & energy
3
380 - Commerce, communications & transportation
3
301 - Sociology & anthropology
2
350 - Public administration & military science
2
140 - Specific philosophical schools
1
160 - Logic
1
170 - Ethics
1
200 - Religion
1
302 - Social interaction
1
336 - Public finance
1
338 - Production
1
340 - Law
1
381 - Commerce
1
658 - General management
1
791 - Public performances
1