Classification
320 - Political science
900 - History & geography
330 - Economics
3,875
300 - Social sciences
451
576 - Genetics & evolution
373
700 - The arts; fine & decorative arts
339
340 - Law
297
200 - Religion
137
100 - Philosophy & psychology
120
333 - Economics of land & energy
102
600 - Technology
101
800 - Literature & rhetoric
90
363 - Other social problems & services
87
140 - Specific philosophical schools
82
370 - Education
76
620 - Engineering & allied operations
76
380 - Commerce, communications & transportation
69
000 - Computer science, information & general works
68
301 - Sociology & anthropology
67
630 - Agriculture & related technologies
61
400 - Language
47
610 - Medicine & health
46
170 - Ethics
36
551 - Geology, hydrology & meteorology
36
304 - Factors affecting social behavior
33
720 - Architecture
28
410 - Linguistics
26
297 - Islam, Babism & Bahai Faith
25
581 - Specific topics in natural history
24
780 - Music
23
350 - Public administration & military science
14
361 - Social problems & social welfare in general
10
500 - Natural sciences & mathematics
10
770 - Photography, photographs & computer art
10
120 - Epistemology, causation & humankind
9
580 - Plants (Botany)
8
658 - General management
8
160 - Logic
7
530 - Physics
7
920 - Biography, genealogy & insignia
7
296 - Judaism
6
360 - Social problems & services; associations
5
364 - Criminology
5
414 - Phonology & phonetics
5
550 - Earth sciences
5
791 - Public performances
5
398 - Folklore
3
520 - Astronomy & allied sciences
3
657 - Accounting
3
324 - The political process
1
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