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