Classification
320 - Political science
340 - Law
330 - Economics
7,377
900 - History & geography
800
300 - Social sciences
681
700 - The arts; fine & decorative arts
251
576 - Genetics & evolution
198
100 - Philosophy & psychology
166
630 - Agriculture & related technologies
128
200 - Religion
117
140 - Specific philosophical schools
87
610 - Medicine & health
57
170 - Ethics
54
333 - Economics of land & energy
51
370 - Education
47
363 - Other social problems & services
41
304 - Factors affecting social behavior
33
380 - Commerce, communications & transportation
33
600 - Technology
30
000 - Computer science, information & general works
28
800 - Literature & rhetoric
22
297 - Islam, Babism & Bahai Faith
18
301 - Sociology & anthropology
16
350 - Public administration & military science
16
361 - Social problems & social welfare in general
16
551 - Geology, hydrology & meteorology
16
364 - Criminology
15
400 - Language
14
620 - Engineering & allied operations
14
581 - Specific topics in natural history
13
658 - General management
11
720 - Architecture
9
650 - Management & auxiliary services
8
336 - Public finance
7
500 - Natural sciences & mathematics
7
780 - Music
7
410 - Linguistics
6
580 - Plants (Botany)
5
791 - Public performances
5
160 - Logic
4
530 - Physics
4
120 - Epistemology, causation & humankind
3
296 - Judaism
3
338 - Production
3
360 - Social problems & services; associations
3
327 - International relations
2
347 - Civil procedure & courts
2
398 - Folklore
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
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