Classification
330 - Economics
320 - Political science
1,114
304 - Factors affecting social behavior
940
610 - Medicine & health
940
333 - Economics of land & energy
815
600 - Technology
559
363 - Other social problems & services
514
370 - Education
364
380 - Commerce, communications & transportation
267
336 - Public finance
218
630 - Agriculture & related technologies
110
340 - Law
4