Classification
006 - Special computer methods
378
670 - Manufacturing
317
621 - Applied physics
230
620 - Engineering & allied operations
181
004 - Data processing & computer science
116
005 - Computer programming, programs & data
56
003 - Systems
50
658 - General management
42
629 - Other branches of engineering
33
040 - [Unassigned]
28
690 - Buildings
25
519 - Probabilities & applied mathematics
17
518 - Numerical analysis
16
624 - Civil engineering
16
515 - Analysis
11
745 - Decorative arts
10
000 - Computer science, information & general works
9
600 - Technology
9
333 - Economics of land & energy
7
331 - Labor economics
6
610 - Medicine & health
6
660 - Chemical engineering
6
700 - The arts; fine & decorative arts
6
025 - Library operations
5
330 - Economics
5
516 - Geometry
5
530 - Physics
5
380 - Commerce, communications & transportation
4
531 - Classical mechanics; solid mechanics
4
650 - Management & auxiliary services
4
720 - Architecture
4
900 - History & geography
4
346 - Private law
3
381 - Commerce
3
510 - Mathematics
3
910 - Geography & travel
3
371 - Schools & their activities; special education
2
500 - Natural sciences & mathematics
2
511 - General principles of mathematics
2
520 - Astronomy & allied sciences
2
696 - Utilities
2
001 - Knowledge
1
030 - General encyclopedic works
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
327 - International relations
1
363 - Other social problems & services
1
501 - Philosophy & theory
1
more ...