Classification
140 - Specific philosophical schools
300 - Social sciences
320 - Political science
361 - Social problems & social welfare in general
330 - Economics
3
360 - Social problems & services; associations
3
100 - Philosophy & psychology
2
170 - Ethics
2
333 - Economics of land & energy
2
301 - Sociology & anthropology
1
340 - Law
1
500 - Natural sciences & mathematics
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1