Classification
658 - General management
300 - Social sciences
259
330 - Economics
152
302 - Social interaction
88
380 - Commerce, communications & transportation
79
384 - Communications; telecommunication
76
500 - Natural sciences & mathematics
57
338 - Production
42
331 - Labor economics
32
670 - Manufacturing
29
650 - Management & auxiliary services
26
000 - Computer science, information & general works
24
363 - Other social problems & services
18
610 - Medicine & health
18
620 - Engineering & allied operations
18
381 - Commerce
16
333 - Economics of land & energy
14
332 - Financial economics
13
153 - Mental processes & intelligence
12
700 - The arts; fine & decorative arts
12
158 - Applied psychology
11
371 - Schools & their activities; special education
11
600 - Technology
11
362 - Social welfare problems & services
10
580 - Plants (Botany)
9
005 - Computer programming, programs & data
8
140 - Specific philosophical schools
8
630 - Agriculture & related technologies
7
370 - Education
6
745 - Decorative arts
6
001 - Knowledge
5
004 - Data processing & computer science
5
150 - Psychology
5
900 - History & geography
5
170 - Ethics
4
320 - Political science
4
361 - Social problems & social welfare in general
4
551 - Geology, hydrology & meteorology
4
100 - Philosophy & psychology
3
303 - Social processes
3
657 - Accounting
3
659 - Advertising & public relations
3
006 - Special computer methods
2
025 - Library operations
2
155 - Differential & developmental psychology
2
368 - Insurance
2
519 - Probabilities & applied mathematics
2
651 - Office services
2
808 - Rhetoric & collections of literature
2
028 - Reading & use of other information media
1
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