Classification
330 - Economics
25
333 - Economics of land & energy
24
320 - Political science
18
363 - Other social problems & services
7
610 - Medicine & health
7
370 - Education
6
304 - Factors affecting social behavior
5
630 - Agriculture & related technologies
5
600 - Technology
3
336 - Public finance
2
340 - Law
2
380 - Commerce, communications & transportation
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1
959 - Southeast Asia
1