Classification
004 - Data processing & computer science
183
006 - Special computer methods
136
621 - Applied physics
47
005 - Computer programming, programs & data
13
610 - Medicine & health
9
519 - Probabilities & applied mathematics
6
620 - Engineering & allied operations
6
003 - Systems
5
515 - Analysis
5
520 - Astronomy & allied sciences
5
629 - Other branches of engineering
3
025 - Library operations
2
534 - Sound & related vibrations
2
150 - Psychology
1
330 - Economics
1
501 - Philosophy & theory
1
510 - Mathematics
1
511 - General principles of mathematics
1
531 - Classical mechanics; solid mechanics
1
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
1
614 - Incidence & prevention of disease
1
634 - Orchards, fruits & forestry
1
770 - Photography, photographs & computer art
1
910 - Geography & travel
1