Classification
005 - Computer programming, programs & data
471
006 - Special computer methods
385
658 - General management
293
000 - Computer science, information & general works
234
330 - Economics
204
500 - Natural sciences & mathematics
135
620 - Engineering & allied operations
113
004 - Data processing & computer science
110
621 - Applied physics
101
700 - The arts; fine & decorative arts
97
600 - Technology
92
519 - Probabilities & applied mathematics
71
300 - Social sciences
69
333 - Economics of land & energy
63
610 - Medicine & health
56
001 - Knowledge
49
338 - Production
49
380 - Commerce, communications & transportation
44
900 - History & geography
36
331 - Labor economics
34
320 - Political science
32
140 - Specific philosophical schools
31
381 - Commerce
30
153 - Mental processes & intelligence
29
363 - Other social problems & services
26
670 - Manufacturing
26
302 - Social interaction
25
745 - Decorative arts
22
384 - Communications; telecommunication
18
530 - Physics
18
370 - Education
17
576 - Genetics & evolution
17
551 - Geology, hydrology & meteorology
15
570 - Life sciences; biology
15
720 - Architecture
15
003 - Systems
14
304 - Factors affecting social behavior
14
580 - Plants (Botany)
14
910 - Geography & travel
14
400 - Language
13
510 - Mathematics
13
629 - Other branches of engineering
13
100 - Philosophy & psychology
12
170 - Ethics
12
340 - Law
12
630 - Agriculture & related technologies
12
301 - Sociology & anthropology
11
303 - Social processes
11
332 - Financial economics
11
615 - Pharmacology & therapeutics
8
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