Classification
515 - Analysis
1,483
519 - Probabilities & applied mathematics
219
518 - Numerical analysis
123
530 - Physics
121
620 - Engineering & allied operations
85
000 - Computer science, information & general works
76
510 - Mathematics
69
500 - Natural sciences & mathematics
65
003 - Systems
63
700 - The arts; fine & decorative arts
58
512 - Algebra
51
516 - Geometry
43
514 - Topology
29
600 - Technology
29
576 - Genetics & evolution
24
333 - Economics of land & energy
19
511 - General principles of mathematics
19
900 - History & geography
18
340 - Law
17
570 - Life sciences; biology
17
330 - Economics
14
621 - Applied physics
12
531 - Classical mechanics; solid mechanics
11
610 - Medicine & health
11
629 - Other branches of engineering
11
658 - General management
9
551 - Geology, hydrology & meteorology
8
800 - Literature & rhetoric
7
006 - Special computer methods
6
363 - Other social problems & services
6
532 - Fluid mechanics; liquid mechanics
6
005 - Computer programming, programs & data
5
380 - Commerce, communications & transportation
5
517 - [Unassigned]
5
140 - Specific philosophical schools
4
304 - Factors affecting social behavior
4
537 - Electricity & electronics
4
580 - Plants (Botany)
4
320 - Political science
3
370 - Education
3
410 - Linguistics
3
536 - Heat
3
004 - Data processing & computer science
2
300 - Social sciences
2
332 - Financial economics
2
523 - Specific celestial bodies & phenomena
2
534 - Sound & related vibrations
2
538 - Magnetism
2
550 - Earth sciences
2
577 - Ecology
2
more ...