Classification
621 - Applied physics
1,978
620 - Engineering & allied operations
257
629 - Other branches of engineering
127
530 - Physics
68
004 - Data processing & computer science
65
003 - Systems
47
537 - Electricity & electronics
45
005 - Computer programming, programs & data
37
006 - Special computer methods
30
610 - Medicine & health
21
660 - Chemical engineering
20
670 - Manufacturing
19
745 - Decorative arts
15
539 - Modern physics
14
500 - Natural sciences & mathematics
12
541 - Physical chemistry
12
658 - General management
12
515 - Analysis
9
535 - Light & infrared & ultraviolet phenomena
9
538 - Magnetism
7
543 - Analytical chemistry
6
333 - Economics of land & energy
5
363 - Other social problems & services
5
519 - Probabilities & applied mathematics
5
520 - Astronomy & allied sciences
5
600 - Technology
5
548 - Crystallography
4
628 - Sanitary & municipal engineering
4
900 - History & geography
4
321 - Systems of governments & states
3
338 - Production
3
518 - Numerical analysis
3
531 - Classical mechanics; solid mechanics
3
534 - Sound & related vibrations
3
536 - Heat
3
550 - Earth sciences
3
551 - Geology, hydrology & meteorology
3
668 - Technology of other organic products
3
910 - Geography & travel
3
370 - Education
2
509 - Historical, geographic & persons treatment
2
000 - Computer science, information & general works
1
302 - Social interaction
1
303 - Social processes
1
331 - Labor economics
1
345 - Criminal law
1
371 - Schools & their activities; special education
1
380 - Commerce, communications & transportation
1
384 - Communications; telecommunication
1
510 - Mathematics
1
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