Classification
300 - Social sciences
380 - Commerce, communications & transportation
384 - Communications; telecommunication
174
330 - Economics
170
658 - General management
167
302 - Social interaction
140
500 - Natural sciences & mathematics
72
320 - Political science
71
670 - Manufacturing
58
600 - Technology
45
700 - The arts; fine & decorative arts
38
370 - Education
37
900 - History & geography
36
331 - Labor economics
34
000 - Computer science, information & general works
29
363 - Other social problems & services
29
140 - Specific philosophical schools
28
301 - Sociology & anthropology
27
100 - Philosophy & psychology
23
338 - Production
22
340 - Law
19
650 - Management & auxiliary services
18
620 - Engineering & allied operations
17
610 - Medicine & health
15
153 - Mental processes & intelligence
14
333 - Economics of land & energy
14
400 - Language
14
200 - Religion
13
170 - Ethics
12
304 - Factors affecting social behavior
11
410 - Linguistics
9
576 - Genetics & evolution
9
381 - Commerce
8
720 - Architecture
7
800 - Literature & rhetoric
6
808 - Rhetoric & collections of literature
6
540 - Chemistry & allied sciences
5
551 - Geology, hydrology & meteorology
5
580 - Plants (Botany)
5
581 - Specific topics in natural history
5
780 - Music
5
150 - Psychology
4
158 - Applied psychology
4
414 - Phonology & phonetics
4
630 - Agriculture & related technologies
4
657 - Accounting
4
006 - Special computer methods
3
360 - Social problems & services; associations
3
361 - Social problems & social welfare in general
3
612 - Human physiology
3
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