Classification
620 - Engineering & allied operations
801
519 - Probabilities & applied mathematics
544
006 - Special computer methods
248
621 - Applied physics
225
629 - Other branches of engineering
180
003 - Systems
172
515 - Analysis
153
518 - Numerical analysis
123
530 - Physics
112
004 - Data processing & computer science
82
005 - Computer programming, programs & data
81
531 - Classical mechanics; solid mechanics
59
658 - General management
55
670 - Manufacturing
50
510 - Mathematics
29
512 - Algebra
29
040 - [Unassigned]
26
330 - Economics
26
624 - Civil engineering
25
610 - Medicine & health
22
690 - Buildings
22
541 - Physical chemistry
16
550 - Earth sciences
11
511 - General principles of mathematics
10
660 - Chemical engineering
9
516 - Geometry
8
570 - Life sciences; biology
8
551 - Geology, hydrology & meteorology
7
535 - Light & infrared & ultraviolet phenomena
5
300 - Social sciences
4
333 - Economics of land & energy
4
500 - Natural sciences & mathematics
4
536 - Heat
4
612 - Human physiology
4
616 - Diseases
4
910 - Geography & travel
4
062 - Organizations in British Isles; in England
3
304 - Factors affecting social behavior
3
001 - Knowledge
2
053 - Serials in other Germanic languages
2
370 - Education
2
514 - Topology
2
532 - Fluid mechanics; liquid mechanics
2
533 - Gas mechanics
2
537 - Electricity & electronics
2
539 - Modern physics
2
543 - Analytical chemistry
2
615 - Pharmacology & therapeutics
2
628 - Sanitary & municipal engineering
2
650 - Management & auxiliary services
2
more ...