Classification
621 - Applied physics
2,456
004 - Data processing & computer science
77
629 - Other branches of engineering
52
620 - Engineering & allied operations
49
003 - Systems
36
006 - Special computer methods
35
537 - Electricity & electronics
26
530 - Physics
20
610 - Medicine & health
16
005 - Computer programming, programs & data
15
321 - Systems of governments & states
6
670 - Manufacturing
6
333 - Economics of land & energy
5
534 - Sound & related vibrations
4
535 - Light & infrared & ultraviolet phenomena
4
660 - Chemical engineering
4
515 - Analysis
3
519 - Probabilities & applied mathematics
2
538 - Magnetism
2
539 - Modern physics
2
624 - Civil engineering
2
658 - General management
2
363 - Other social problems & services
1
370 - Education
1
509 - Historical, geographic & persons treatment
1
511 - General principles of mathematics
1
523 - Specific celestial bodies & phenomena
1
543 - Analytical chemistry
1
570 - Life sciences; biology
1
571 - Physiology & related subjects
1
600 - Technology
1
612 - Human physiology
1
616 - Diseases
1
631 - Techniques, equipment & materials
1
690 - Buildings
1