Classification
621 - Applied physics
2,532
004 - Data processing & computer science
588
006 - Special computer methods
280
629 - Other branches of engineering
205
005 - Computer programming, programs & data
149
620 - Engineering & allied operations
136
003 - Systems
95
380 - Commerce, communications & transportation
74
658 - General management
42
519 - Probabilities & applied mathematics
30
530 - Physics
25
600 - Technology
25
534 - Sound & related vibrations
20
333 - Economics of land & energy
16
384 - Communications; telecommunication
16
000 - Computer science, information & general works
14
670 - Manufacturing
13
338 - Production
12
515 - Analysis
12
610 - Medicine & health
11
330 - Economics
9
500 - Natural sciences & mathematics
8
630 - Agriculture & related technologies
8
518 - Numerical analysis
7
535 - Light & infrared & ultraviolet phenomena
7
700 - The arts; fine & decorative arts
7
624 - Civil engineering
6
363 - Other social problems & services
5
537 - Electricity & electronics
5
300 - Social sciences
4
302 - Social interaction
4
381 - Commerce
4
511 - General principles of mathematics
4
140 - Specific philosophical schools
3
303 - Social processes
3
304 - Factors affecting social behavior
3
320 - Political science
3
327 - International relations
3
526 - Mathematical geography
3
550 - Earth sciences
3
551 - Geology, hydrology & meteorology
3
650 - Management & auxiliary services
3
910 - Geography & travel
3
025 - Library operations
2
340 - Law
2
509 - Historical, geographic & persons treatment
2
531 - Classical mechanics; solid mechanics
2
540 - Chemistry & allied sciences
2
576 - Genetics & evolution
2
617 - Surgery & related medical specialties
2
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