Classification
338 - Production
240
330 - Economics
38
337 - International economics
36
658 - General management
20
333 - Economics of land & energy
18
339 - Macroeconomics & related topics
15
320 - Political science
10
331 - Labor economics
10
304 - Factors affecting social behavior
8
650 - Management & auxiliary services
5
910 - Geography & travel
5
306 - Culture & institutions
4
307 - Communities
4
327 - International relations
4
624 - Civil engineering
4
629 - Other branches of engineering
4
657 - Accounting
4
006 - Special computer methods
3
363 - Other social problems & services
3
577 - Ecology
3
621 - Applied physics
3
341 - Law of nations
2
710 - Civic & landscape art
2
005 - Computer programming, programs & data
1
107 - Education, research & related topics
1
140 - Specific philosophical schools
1
300 - Social sciences
1
305 - Social groups
1
336 - Public finance
1
370 - Education
1
371 - Schools & their activities; special education
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
551 - Geology, hydrology & meteorology
1
578 - Natural history of organisms
1
600 - Technology
1
930 - History of ancient world to ca. 499
1