Classification
947 - Eastern Europe; Russia
45
320 - Political science
33
306 - Culture & institutions
12
940 - History of Europe
9
301 - Sociology & anthropology
8
327 - International relations
8
305 - Social groups
7
330 - Economics
4
809 - History, description & criticism
4
909 - World history
3
323 - Civil & political rights
2
338 - Production
2
355 - Military science
2
370 - Education
2
418 - Standard usage & applied linguistics
2
509 - Historical, geographic & persons treatment
2
520 - Astronomy & allied sciences
2
600 - Technology
2
907 - Education, research & related topics
2
120 - Epistemology, causation & humankind
1
296 - Judaism
1
300 - Social sciences
1
303 - Social processes
1
304 - Factors affecting social behavior
1
331 - Labor economics
1
333 - Economics of land & energy
1
337 - International economics
1
350 - Public administration & military science
1
363 - Other social problems & services
1
364 - Criminology
1
401 - Philosophy & theory
1
407 - Education, research & related topics
1
510 - Mathematics
1
530 - Physics
1
616 - Diseases
1
621 - Applied physics
1
900 - History & geography
1
950 - History of Asia; Far East
1
951 - China & adjacent areas
1