Classification
340 - Law
330 - Economics
130
320 - Political science
129
900 - History & geography
51
300 - Social sciences
9
370 - Education
8
100 - Philosophy & psychology
7
630 - Agriculture & related technologies
7
700 - The arts; fine & decorative arts
7
363 - Other social problems & services
6
140 - Specific philosophical schools
4
170 - Ethics
3
200 - Religion
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
333 - Economics of land & energy
1
336 - Public finance
1
410 - Linguistics
1
600 - Technology
1