Classification
005 - Computer programming, programs & data
1
006 - Special computer methods
3
107 - Education, research & related topics
1
140 - Specific philosophical schools
1
300 - Social sciences
1
304 - Factors affecting social behavior
8
305 - Social groups
1
306 - Culture & institutions
3
307 - Communities
3
320 - Political science
8
327 - International relations
1
330 - Economics
35
331 - Labor economics
10
333 - Economics of land & energy
18
336 - Public finance
1
337 - International economics
31
338 - Production
207
339 - Macroeconomics & related topics
12
341 - Law of nations
1
363 - Other social problems & services
3
371 - Schools & their activities; special education
1
519 - Probabilities & applied mathematics
1
551 - Geology, hydrology & meteorology
1
577 - Ecology
2
578 - Natural history of organisms
1
600 - Technology
1
621 - Applied physics
3
624 - Civil engineering
4
629 - Other branches of engineering
3
650 - Management & auxiliary services
4
657 - Accounting
3
658 - General management
17
710 - Civic & landscape art
2
910 - Geography & travel
4
930 - History of ancient world to ca. 499
1