Classification
340 - Law
320 - Political science
8,313
330 - Economics
7,684
900 - History & geography
1,795
700 - The arts; fine & decorative arts
902
300 - Social sciences
892
100 - Philosophy & psychology
497
610 - Medicine & health
426
346 - Private law
350
140 - Specific philosophical schools
297
200 - Religion
295
576 - Genetics & evolution
247
000 - Computer science, information & general works
211
333 - Economics of land & energy
197
600 - Technology
181
400 - Language
175
380 - Commerce, communications & transportation
169
363 - Other social problems & services
163
170 - Ethics
158
630 - Agriculture & related technologies
153
370 - Education
146
364 - Criminology
131
410 - Linguistics
113
620 - Engineering & allied operations
112
800 - Literature & rhetoric
107
344 - Labor, social, education & cultural law
96
304 - Factors affecting social behavior
95
343 - Military, tax, trade & industrial law
88
301 - Sociology & anthropology
80
500 - Natural sciences & mathematics
59
361 - Social problems & social welfare in general
54
297 - Islam, Babism & Bahai Faith
52
347 - Civil procedure & courts
45
342 - Constitutional & administrative law
44
580 - Plants (Botany)
42
530 - Physics
40
551 - Geology, hydrology & meteorology
35
658 - General management
30
491 - East Indo-European & Celtic languages
29
345 - Criminal law
27
350 - Public administration & military science
27
581 - Specific topics in natural history
24
720 - Architecture
24
780 - Music
21
414 - Phonology & phonetics
20
336 - Public finance
18
650 - Management & auxiliary services
17
360 - Social problems & services; associations
14
120 - Epistemology, causation & humankind
12
540 - Chemistry & allied sciences
11
more ...