Classification
330 - Economics
6
333 - Economics of land & energy
361 - Social problems & social welfare in general
320 - Political science
5
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
300 - Social sciences
1
340 - Law
1
350 - Public administration & military science
1
380 - Commerce, communications & transportation
1