Classification
330 - Economics
20
338 - Production
16
305 - Social groups
9
339 - Macroeconomics & related topics
7
306 - Culture & institutions
5
341 - Law of nations
3
304 - Factors affecting social behavior
2
382 - International commerce
2
003 - Systems
1
033 - Encyclopedias in other Germanic languages
1
300 - Social sciences
1
301 - Sociology & anthropology
1
303 - Social processes
1
320 - Political science
1
321 - Systems of governments & states
1
331 - Labor economics
1
332 - Financial economics
1
334 - Cooperatives
1
337 - International economics
1
343 - Military, tax, trade & industrial law
1
362 - Social welfare problems & services
1
364 - Criminology
1
523 - Specific celestial bodies & phenomena
1
551 - Geology, hydrology & meteorology
1
577 - Ecology
1