Classification
003 - Systems
33
004 - Data processing & computer science
44
005 - Computer programming, programs & data
17
006 - Special computer methods
104
025 - Library operations
3
321 - Systems of governments & states
10
333 - Economics of land & energy
4
515 - Analysis
3
518 - Numerical analysis
2
523 - Specific celestial bodies & phenomena
1
530 - Physics
5
535 - Light & infrared & ultraviolet phenomena
1
537 - Electricity & electronics
2
571 - Physiology & related subjects
1
610 - Medicine & health
10
620 - Engineering & allied operations
24
621 - Applied physics
709
629 - Other branches of engineering
191
658 - General management
8
660 - Chemical engineering
6
670 - Manufacturing
15
780 - Music
1