Classification
304 - Factors affecting social behavior
610 - Medicine & health
2,597
330 - Economics
1,154
320 - Political science
582
333 - Economics of land & energy
433
300 - Social sciences
409
370 - Education
318
900 - History & geography
228
363 - Other social problems & services
221
600 - Technology
189
700 - The arts; fine & decorative arts
164
140 - Specific philosophical schools
125
380 - Commerce, communications & transportation
114
301 - Sociology & anthropology
107
340 - Law
93
000 - Computer science, information & general works
88
658 - General management
83
200 - Religion
78
800 - Literature & rhetoric
58
338 - Production
54
100 - Philosophy & psychology
53
620 - Engineering & allied operations
51
630 - Agriculture & related technologies
51
400 - Language
47
331 - Labor economics
46
500 - Natural sciences & mathematics
43
297 - Islam, Babism & Bahai Faith
41
576 - Genetics & evolution
41
361 - Social problems & social welfare in general
33
551 - Geology, hydrology & meteorology
32
580 - Plants (Botany)
31
336 - Public finance
30
540 - Chemistry & allied sciences
24
581 - Specific topics in natural history
23
170 - Ethics
22
410 - Linguistics
19
780 - Music
19
414 - Phonology & phonetics
18
302 - Social interaction
14
670 - Manufacturing
14
530 - Physics
12
350 - Public administration & military science
11
381 - Commerce
10
770 - Photography, photographs & computer art
9
332 - Financial economics
8
615 - Pharmacology & therapeutics
7
650 - Management & auxiliary services
7
360 - Social problems & services; associations
6
720 - Architecture
6
158 - Applied psychology
4
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