Classification
515 - Analysis
509
519 - Probabilities & applied mathematics
396
003 - Systems
183
629 - Other branches of engineering
171
658 - General management
57
620 - Engineering & allied operations
51
530 - Physics
50
004 - Data processing & computer science
44
510 - Mathematics
44
516 - Geometry
37
621 - Applied physics
29
511 - General principles of mathematics
28
518 - Numerical analysis
28
006 - Special computer methods
27
330 - Economics
21
005 - Computer programming, programs & data
14
531 - Classical mechanics; solid mechanics
14
512 - Algebra
13
514 - Topology
12
001 - Knowledge
8
300 - Social sciences
8
670 - Manufacturing
7
333 - Economics of land & energy
6
500 - Natural sciences & mathematics
6
000 - Computer science, information & general works
5
338 - Production
5
539 - Modern physics
3
550 - Earth sciences
3
650 - Management & auxiliary services
3
700 - The arts; fine & decorative arts
3
332 - Financial economics
2
368 - Insurance
2
535 - Light & infrared & ultraviolet phenomena
2
536 - Heat
2
570 - Life sciences; biology
2
577 - Ecology
2
610 - Medicine & health
2
624 - Civil engineering
2
660 - Chemical engineering
2
160 - Logic
1
174 - Occupational ethics
1
336 - Public finance
1
339 - Macroeconomics & related topics
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
501 - Philosophy & theory
1
513 - Arithmetic
1
523 - Specific celestial bodies & phenomena
1
526 - Mathematical geography
1
more ...