Classification
330 - Economics
300 - Social sciences
185
658 - General management
155
320 - Political science
92
333 - Economics of land & energy
90
363 - Other social problems & services
88
380 - Commerce, communications & transportation
81
700 - The arts; fine & decorative arts
80
302 - Social interaction
69
000 - Computer science, information & general works
68
600 - Technology
68
610 - Medicine & health
57
620 - Engineering & allied operations
50
384 - Communications; telecommunication
48
500 - Natural sciences & mathematics
45
630 - Agriculture & related technologies
43
338 - Production
34
900 - History & geography
34
580 - Plants (Botany)
32
140 - Specific philosophical schools
31
370 - Education
30
670 - Manufacturing
28
331 - Labor economics
26
340 - Law
22
551 - Geology, hydrology & meteorology
21
381 - Commerce
15
650 - Management & auxiliary services
15
332 - Financial economics
14
100 - Philosophy & psychology
12
170 - Ethics
12
581 - Specific topics in natural history
11
158 - Applied psychology
10
540 - Chemistry & allied sciences
10
800 - Literature & rhetoric
10
361 - Social problems & social welfare in general
8
576 - Genetics & evolution
8
720 - Architecture
8
362 - Social welfare problems & services
7
657 - Accounting
7
200 - Religion
6
001 - Knowledge
5
150 - Psychology
5
153 - Mental processes & intelligence
5
304 - Factors affecting social behavior
4
303 - Social processes
3
336 - Public finance
3
659 - Advertising & public relations
3
004 - Data processing & computer science
2
006 - Special computer methods
2
155 - Differential & developmental psychology
2
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