Classification
530 - Physics
1,645
004 - Data processing & computer science
1,367
620 - Engineering & allied operations
998
519 - Probabilities & applied mathematics
943
005 - Computer programming, programs & data
662
006 - Special computer methods
601
518 - Numerical analysis
559
515 - Analysis
524
621 - Applied physics
470
003 - Systems
367
570 - Life sciences; biology
303
629 - Other branches of engineering
264
531 - Classical mechanics; solid mechanics
156
539 - Modern physics
156
512 - Algebra
133
511 - General principles of mathematics
129
516 - Geometry
105
536 - Heat
104
510 - Mathematics
95
571 - Physiology & related subjects
79
658 - General management
77
541 - Physical chemistry
68
610 - Medicine & health
61
670 - Manufacturing
61
523 - Specific celestial bodies & phenomena
59
520 - Astronomy & allied sciences
57
330 - Economics
53
537 - Electricity & electronics
50
535 - Light & infrared & ultraviolet phenomena
37
550 - Earth sciences
34
624 - Civil engineering
34
500 - Natural sciences & mathematics
32
025 - Library operations
30
577 - Ecology
27
501 - Philosophy & theory
25
572 - Biochemistry
23
612 - Human physiology
23
514 - Topology
22
690 - Buildings
22
616 - Diseases
21
576 - Genetics & evolution
20
551 - Geology, hydrology & meteorology
19
660 - Chemical engineering
17
300 - Social sciences
15
333 - Economics of land & energy
14
001 - Knowledge
13
543 - Analytical chemistry
11
650 - Management & auxiliary services
11
332 - Financial economics
10
534 - Sound & related vibrations
9
more ...