Classification
340 - Law
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
320 - Political science
2
330 - Economics
2
361 - Social problems & social welfare in general
2
380 - Commerce, communications & transportation
2
900 - History & geography
2
000 - Computer science, information & general works
1
170 - Ethics
1
300 - Social sciences
1
360 - Social problems & services; associations
1
500 - Natural sciences & mathematics
1
610 - Medicine & health
1