Classification
330 - Economics
380 - Commerce, communications & transportation
658 - General management
384 - Communications; telecommunication
443
302 - Social interaction
167
300 - Social sciences
118
670 - Manufacturing
80
500 - Natural sciences & mathematics
67
000 - Computer science, information & general works
61
331 - Labor economics
61
381 - Commerce
60
808 - Rhetoric & collections of literature
59
650 - Management & auxiliary services
38
338 - Production
34
158 - Applied psychology
22
153 - Mental processes & intelligence
21
600 - Technology
21
150 - Psychology
20
700 - The arts; fine & decorative arts
19
333 - Economics of land & energy
18
363 - Other social problems & services
18
651 - Office services
16
320 - Political science
15
610 - Medicine & health
13
620 - Engineering & allied operations
12
006 - Special computer methods
10
370 - Education
10
659 - Advertising & public relations
10
140 - Specific philosophical schools
9
155 - Differential & developmental psychology
8
900 - History & geography
7
519 - Probabilities & applied mathematics
6
576 - Genetics & evolution
6
303 - Social processes
5
340 - Law
5
551 - Geology, hydrology & meteorology
5
580 - Plants (Botany)
5
001 - Knowledge
4
170 - Ethics
4
630 - Agriculture & related technologies
4
720 - Architecture
4
005 - Computer programming, programs & data
3
011 - Bibliographies
3
174 - Occupational ethics
3
332 - Financial economics
3
400 - Language
3
530 - Physics
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
297 - Islam, Babism & Bahai Faith
2
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