Classification
005 - Computer programming, programs & data
1,179
004 - Data processing & computer science
1,153
006 - Special computer methods
1,047
025 - Library operations
466
003 - Systems
198
658 - General management
151
000 - Computer science, information & general works
118
500 - Natural sciences & mathematics
83
621 - Applied physics
76
331 - Labor economics
67
330 - Economics
52
620 - Engineering & allied operations
45
518 - Numerical analysis
34
610 - Medicine & health
27
384 - Communications; telecommunication
25
371 - Schools & their activities; special education
23
745 - Decorative arts
21
020 - Library & information sciences
18
570 - Life sciences; biology
15
300 - Social sciences
13
338 - Production
13
381 - Commerce
13
303 - Social processes
10
410 - Linguistics
9
511 - General principles of mathematics
9
910 - Geography & travel
8
001 - Knowledge
7
302 - Social interaction
7
501 - Philosophy & theory
7
519 - Probabilities & applied mathematics
6
363 - Other social problems & services
5
670 - Manufacturing
5
510 - Mathematics
4
364 - Criminology
3
370 - Education
3
374 - Adult education
3
520 - Astronomy & allied sciences
3
629 - Other branches of engineering
3
333 - Economics of land & energy
2
343 - Military, tax, trade & industrial law
2
362 - Social welfare problems & services
2
368 - Insurance
2
540 - Chemistry & allied sciences
2
541 - Physical chemistry
2
615 - Pharmacology & therapeutics
2
616 - Diseases
2
650 - Management & auxiliary services
2
651 - Office services
2
657 - Accounting
2
770 - Photography, photographs & computer art
2
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