Classification
320 - Political science
330 - Economics
394
340 - Law
68
300 - Social sciences
49
630 - Agriculture & related technologies
29
900 - History & geography
3
700 - The arts; fine & decorative arts
2
800 - Literature & rhetoric
2
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
600 - Technology
1
610 - Medicine & health
1