Classification
320 - Political science
896
900 - History & geography
645
330 - Economics
313
341 - Law of nations
185
340 - Law
178
940 - History of Europe
171
700 - The arts; fine & decorative arts
169
300 - Social sciences
152
306 - Culture & institutions
139
333 - Economics of land & energy
129
327 - International relations
125
304 - Factors affecting social behavior
105
343 - Military, tax, trade & industrial law
104
800 - Literature & rhetoric
99
809 - History, description & criticism
99
610 - Medicine & health
93
363 - Other social problems & services
91
380 - Commerce, communications & transportation
89
338 - Production
88
000 - Computer science, information & general works
86
337 - International economics
81
342 - Constitutional & administrative law
80
140 - Specific philosophical schools
79
600 - Technology
74
200 - Religion
61
361 - Social problems & social welfare in general
58
370 - Education
55
100 - Philosophy & psychology
53
301 - Sociology & anthropology
49
003 - Systems
45
344 - Labor, social, education & cultural law
45
400 - Language
45
620 - Engineering & allied operations
43
410 - Linguistics
40
332 - Financial economics
39
305 - Social groups
35
630 - Agriculture & related technologies
35
947 - Eastern Europe; Russia
34
346 - Private law
33
909 - World history
33
339 - Macroeconomics & related topics
30
576 - Genetics & evolution
28
820 - English & Old English literatures
28
658 - General management
26
345 - Criminal law
25
551 - Geology, hydrology & meteorology
25
331 - Labor economics
23
297 - Islam, Babism & Bahai Faith
22
720 - Architecture
21
580 - Plants (Botany)
19
more ...