Classification
500 - Natural sciences & mathematics
004 - Data processing & computer science
669
331 - Labor economics
209
658 - General management
190
330 - Economics
116
620 - Engineering & allied operations
111
384 - Communications; telecommunication
102
000 - Computer science, information & general works
89
700 - The arts; fine & decorative arts
75
745 - Decorative arts
73
005 - Computer programming, programs & data
47
333 - Economics of land & energy
42
600 - Technology
42
300 - Social sciences
41
380 - Commerce, communications & transportation
38
510 - Mathematics
34
100 - Philosophy & psychology
33
530 - Physics
33
900 - History & geography
31
338 - Production
29
003 - Systems
28
374 - Adult education
28
576 - Genetics & evolution
26
302 - Social interaction
25
340 - Law
23
363 - Other social problems & services
23
670 - Manufacturing
22
006 - Special computer methods
20
140 - Specific philosophical schools
18
520 - Astronomy & allied sciences
15
320 - Political science
14
370 - Education
14
610 - Medicine & health
13
381 - Commerce
12
621 - Applied physics
12
720 - Architecture
11
519 - Probabilities & applied mathematics
10
120 - Epistemology, causation & humankind
6
400 - Language
6
539 - Modern physics
6
540 - Chemistry & allied sciences
6
153 - Mental processes & intelligence
5
200 - Religion
5
410 - Linguistics
5
001 - Knowledge
4
170 - Ethics
4
301 - Sociology & anthropology
4
303 - Social processes
4
305 - Social groups
4
371 - Schools & their activities; special education
4
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