Classification
340 - Law
320 - Political science
8,294
330 - Economics
7,676
900 - History & geography
1,795
700 - The arts; fine & decorative arts
888
300 - Social sciences
887
100 - Philosophy & psychology
488
610 - Medicine & health
421
200 - Religion
303
140 - Specific philosophical schools
287
576 - Genetics & evolution
244
000 - Computer science, information & general works
205
333 - Economics of land & energy
192
600 - Technology
177
400 - Language
176
380 - Commerce, communications & transportation
169
363 - Other social problems & services
162
170 - Ethics
153
630 - Agriculture & related technologies
153
370 - Education
146
364 - Criminology
133
410 - Linguistics
113
620 - Engineering & allied operations
111
800 - Literature & rhetoric
107
304 - Factors affecting social behavior
93
301 - Sociology & anthropology
81
500 - Natural sciences & mathematics
59
297 - Islam, Babism & Bahai Faith
54
361 - Social problems & social welfare in general
53
580 - Plants (Botany)
44
530 - Physics
40
551 - Geology, hydrology & meteorology
35
491 - East Indo-European & Celtic languages
29
658 - General management
26
350 - Public administration & military science
25
581 - Specific topics in natural history
24
720 - Architecture
23
414 - Phonology & phonetics
20
780 - Music
20
336 - Public finance
17
650 - Management & auxiliary services
15
344 - Labor, social, education & cultural law
14
360 - Social problems & services; associations
14
120 - Epistemology, causation & humankind
12
540 - Chemistry & allied sciences
11
296 - Judaism
9
346 - Private law
9
342 - Constitutional & administrative law
8
791 - Public performances
8
160 - Logic
6
more ...