Classification
512 - Algebra
326
515 - Analysis
238
511 - General principles of mathematics
208
530 - Physics
153
519 - Probabilities & applied mathematics
130
516 - Geometry
124
514 - Topology
99
510 - Mathematics
62
539 - Modern physics
35
551 - Geology, hydrology & meteorology
35
532 - Fluid mechanics; liquid mechanics
32
531 - Classical mechanics; solid mechanics
27
620 - Engineering & allied operations
27
621 - Applied physics
23
332 - Financial economics
22
003 - Systems
20
005 - Computer programming, programs & data
18
523 - Specific celestial bodies & phenomena
17
006 - Special computer methods
15
004 - Data processing & computer science
11
518 - Numerical analysis
11
629 - Other branches of engineering
7
330 - Economics
6
153 - Mental processes & intelligence
5
160 - Logic
5
368 - Insurance
5
538 - Magnetism
5
550 - Earth sciences
5
624 - Civil engineering
5
001 - Knowledge
4
192 - Philosophy of British Isles
4
501 - Philosophy & theory
4
513 - Arithmetic
4
577 - Ecology
4
612 - Human physiology
4
121 - Epistemology
3
150 - Psychology
3
536 - Heat
3
537 - Electricity & electronics
3
541 - Physical chemistry
3
570 - Life sciences; biology
3
576 - Genetics & evolution
3
658 - General management
3
660 - Chemical engineering
3
111 - Ontology
2
184 - Platonic philosophy
2
191 - Philosophy of United States & Canada
2
193 - Philosophy of Germany & Austria
2
300 - Social sciences
2
302 - Social interaction
2
more ...