Classification
370 - Education
330 - Economics
1,232
320 - Political science
1,106
610 - Medicine & health
680
300 - Social sciences
546
100 - Philosophy & psychology
534
700 - The arts; fine & decorative arts
531
900 - History & geography
520
333 - Economics of land & energy
512
600 - Technology
465
304 - Factors affecting social behavior
327
400 - Language
265
363 - Other social problems & services
231
380 - Commerce, communications & transportation
229
140 - Specific philosophical schools
212
000 - Computer science, information & general works
202
500 - Natural sciences & mathematics
175
200 - Religion
170
340 - Law
146
620 - Engineering & allied operations
120
410 - Linguistics
96
800 - Literature & rhetoric
91
170 - Ethics
79
530 - Physics
78
301 - Sociology & anthropology
77
780 - Music
69
576 - Genetics & evolution
60
551 - Geology, hydrology & meteorology
51
630 - Agriculture & related technologies
50
658 - General management
44
720 - Architecture
44
361 - Social problems & social welfare in general
37
297 - Islam, Babism & Bahai Faith
35
540 - Chemistry & allied sciences
29
580 - Plants (Botany)
29
581 - Specific topics in natural history
29
120 - Epistemology, causation & humankind
19
160 - Logic
18
414 - Phonology & phonetics
16
360 - Social problems & services; associations
14
770 - Photography, photographs & computer art
14
336 - Public finance
12
612 - Human physiology
11
657 - Accounting
11
350 - Public administration & military science
8
364 - Criminology
8
371 - Schools & their activities; special education
8
153 - Mental processes & intelligence
7
296 - Judaism
7
362 - Social welfare problems & services
5
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