Classification
330 - Economics
33
338 - Production
14
332 - Financial economics
5
331 - Labor economics
4
972 - Middle America; Mexico
4
305 - Social groups
3
500 - Natural sciences & mathematics
3
658 - General management
3
300 - Social sciences
2
320 - Political science
2
335 - Socialism & related systems
2
337 - International economics
2
339 - Macroeconomics & related topics
2
381 - Commerce
2
006 - Special computer methods
1
025 - Library operations
1
158 - Applied psychology
1
301 - Sociology & anthropology
1
302 - Social interaction
1
306 - Culture & institutions
1
307 - Communities
1
355 - Military science
1
362 - Social welfare problems & services
1
382 - International commerce
1
650 - Management & auxiliary services
1
664 - Food technology
1
900 - History & geography
1
917 - Geography of & travel in North America
1
978 - Western United States
1