Classification
338 - Production
49
333 - Economics of land & energy
22
332 - Financial economics
16
362 - Social welfare problems & services
12
382 - International commerce
11
336 - Public finance
8
363 - Other social problems & services
7
331 - Labor economics
5
630 - Agriculture & related technologies
5
384 - Communications; telecommunication
4
304 - Factors affecting social behavior
3
330 - Economics
3
376 - [Unassigned]
3
658 - General management
3
305 - Social groups
2
307 - Communities
2
339 - Macroeconomics & related topics
2
350 - Public administration & military science
2
370 - Education
2
372 - Elementary education
2
379 - Public policy issues in education
2
025 - Library operations
1
303 - Social processes
1
320 - Political science
1
337 - International economics
1
341 - Law of nations
1
343 - Military, tax, trade & industrial law
1
346 - Private law
1
351 - Public administration
1
352 - General considerations of public administration
1
355 - Military science
1
373 - Secondary education
1
374 - Adult education
1
378 - Higher education
1
380 - Commerce, communications & transportation
1
385 - Railroad transportation
1
387 - Water, air & space transportation
1
657 - Accounting
1