Classification
330 - Economics
335
338 - Production
113
339 - Macroeconomics & related topics
46
332 - Financial economics
26
658 - General management
20
337 - International economics
17
320 - Political science
15
940 - History of Europe
10
306 - Culture & institutions
9
333 - Economics of land & energy
7
301 - Sociology & anthropology
6
941 - British Isles
6
943 - Central Europe; Germany
6
300 - Social sciences
5
304 - Factors affecting social behavior
5
327 - International relations
5
336 - Public finance
5
909 - World history
5
335 - Socialism & related systems
4
900 - History & geography
4
302 - Social interaction
3
325 - International migration & colonization
3
809 - History, description & criticism
3
170 - Ethics
2
509 - Historical, geographic & persons treatment
2
630 - Agriculture & related technologies
2
910 - Geography & travel
2
945 - Italian Peninsula & adjacent islands
2
947 - Eastern Europe; Russia
2
950 - History of Asia; Far East
2
973 - United States
2
004 - Data processing & computer science
1
109 - Historical & collected persons treatment
1
111 - Ontology
1
155 - Differential & developmental psychology
1
180 - Ancient, medieval & eastern philosophy
1
190 - Modern western philosophy
1
303 - Social processes
1
305 - Social groups
1
307 - Communities
1
331 - Labor economics
1
343 - Military, tax, trade & industrial law
1
346 - Private law
1
361 - Social problems & social welfare in general
1
370 - Education
1
382 - International commerce
1
387 - Water, air & space transportation
1
519 - Probabilities & applied mathematics
1
570 - Life sciences; biology
1
577 - Ecology
1
more ...