Classification
003 - Systems
206
620 - Engineering & allied operations
150
518 - Numerical analysis
100
004 - Data processing & computer science
74
621 - Applied physics
61
519 - Probabilities & applied mathematics
58
515 - Analysis
41
530 - Physics
37
531 - Classical mechanics; solid mechanics
31
006 - Special computer methods
25
629 - Other branches of engineering
23
005 - Computer programming, programs & data
16
510 - Mathematics
15
610 - Medicine & health
11
511 - General principles of mathematics
9
512 - Algebra
9
624 - Civil engineering
9
670 - Manufacturing
8
001 - Knowledge
5
516 - Geometry
4
551 - Geology, hydrology & meteorology
4
500 - Natural sciences & mathematics
3
523 - Specific celestial bodies & phenomena
3
534 - Sound & related vibrations
3
535 - Light & infrared & ultraviolet phenomena
3
570 - Life sciences; biology
3
658 - General management
3
062 - Organizations in British Isles; in England
2
333 - Economics of land & energy
2
514 - Topology
2
520 - Astronomy & allied sciences
2
541 - Physical chemistry
2
690 - Buildings
2
000 - Computer science, information & general works
1
040 - [Unassigned]
1
053 - Serials in other Germanic languages
1
140 - Specific philosophical schools
1
153 - Mental processes & intelligence
1
371 - Schools & their activities; special education
1
380 - Commerce, communications & transportation
1
501 - Philosophy & theory
1
526 - Mathematical geography
1
537 - Electricity & electronics
1
543 - Analytical chemistry
1
550 - Earth sciences
1
571 - Physiology & related subjects
1
600 - Technology
1
612 - Human physiology
1
641 - Food & drink
1
660 - Chemical engineering
1
more ...