Classification
621 - Applied physics
26
620 - Engineering & allied operations
23
330 - Economics
13
512 - Algebra
13
515 - Analysis
12
519 - Probabilities & applied mathematics
12
510 - Mathematics
10
541 - Physical chemistry
9
629 - Other branches of engineering
9
004 - Data processing & computer science
6
530 - Physics
5
550 - Earth sciences
5
670 - Manufacturing
5
514 - Topology
4
534 - Sound & related vibrations
4
551 - Geology, hydrology & meteorology
4
624 - Civil engineering
4
511 - General principles of mathematics
3
531 - Classical mechanics; solid mechanics
3
537 - Electricity & electronics
3
570 - Life sciences; biology
3
571 - Physiology & related subjects
3
660 - Chemical engineering
3
003 - Systems
2
005 - Computer programming, programs & data
2
500 - Natural sciences & mathematics
2
516 - Geometry
2
518 - Numerical analysis
2
526 - Mathematical geography
2
535 - Light & infrared & ultraviolet phenomena
2
536 - Heat
2
540 - Chemistry & allied sciences
2
547 - Organic chemistry
2
690 - Buildings
2
300 - Social sciences
1
332 - Financial economics
1
337 - International economics
1
339 - Macroeconomics & related topics
1
363 - Other social problems & services
1
549 - Mineralogy
1
572 - Biochemistry
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1
611 - Human anatomy, cytology & histology
1
614 - Incidence & prevention of disease
1
616 - Diseases
1