Classification
330 - Economics
1,683
320 - Political science
441
333 - Economics of land & energy
273
363 - Other social problems & services
201
304 - Factors affecting social behavior
119
610 - Medicine & health
119
336 - Public finance
103
380 - Commerce, communications & transportation
84
600 - Technology
45
370 - Education
25
630 - Agriculture & related technologies
14
340 - Law
2
000 - Computer science, information & general works
1
530 - Physics
1
700 - The arts; fine & decorative arts
1