Classification
515 - Analysis
907
519 - Probabilities & applied mathematics
98
510 - Mathematics
55
530 - Physics
49
512 - Algebra
40
514 - Topology
27
511 - General principles of mathematics
26
516 - Geometry
19
003 - Systems
11
518 - Numerical analysis
11
620 - Engineering & allied operations
11
700 - The arts; fine & decorative arts
9
333 - Economics of land & energy
8
610 - Medicine & health
8
000 - Computer science, information & general works
6
580 - Plants (Botany)
6
576 - Genetics & evolution
5
621 - Applied physics
5
600 - Technology
4
612 - Human physiology
4
006 - Special computer methods
3
100 - Philosophy & psychology
3
330 - Economics
3
500 - Natural sciences & mathematics
3
517 - [Unassigned]
3
629 - Other branches of engineering
3
900 - History & geography
3
005 - Computer programming, programs & data
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
531 - Classical mechanics; solid mechanics
2
540 - Chemistry & allied sciences
2
541 - Physical chemistry
2
550 - Earth sciences
2
570 - Life sciences; biology
2
004 - Data processing & computer science
1
140 - Specific philosophical schools
1
300 - Social sciences
1
320 - Political science
1
332 - Financial economics
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
509 - Historical, geographic & persons treatment
1
537 - Electricity & electronics
1
539 - Modern physics
1
551 - Geology, hydrology & meteorology
1
577 - Ecology
1
615 - Pharmacology & therapeutics
1
658 - General management
1
more ...