Classification
320 - Political science
330 - Economics
2,883
300 - Social sciences
1,025
900 - History & geography
748
340 - Law
727
630 - Agriculture & related technologies
238
700 - The arts; fine & decorative arts
214
200 - Religion
163
100 - Philosophy & psychology
134
610 - Medicine & health
95
943 - Central Europe; Germany
48
576 - Genetics & evolution
36
170 - Ethics
32
304 - Factors affecting social behavior
28
370 - Education
27
650 - Management & auxiliary services
26
361 - Social problems & social welfare in general
25
500 - Natural sciences & mathematics
22
297 - Islam, Babism & Bahai Faith
19
333 - Economics of land & energy
18
800 - Literature & rhetoric
18
940 - History of Europe
17
301 - Sociology & anthropology
16
658 - General management
16
327 - International relations
15
600 - Technology
15
400 - Language
12
000 - Computer science, information & general works
11
364 - Criminology
11
140 - Specific philosophical schools
9
160 - Logic
8
336 - Public finance
8
363 - Other social problems & services
8
322 - Relation of state to organized groups
7
720 - Architecture
7
305 - Social groups
6
324 - The political process
6
780 - Music
6
261 - Social theology
5
831 - German poetry
5
302 - Social interaction
4
303 - Social processes
4
332 - Financial economics
4
338 - Production
4
380 - Commerce, communications & transportation
4
909 - World history
4
270 - History of Christianity & Christian church
3
296 - Judaism
3
355 - Military science
3
382 - International commerce
3
more ...