Classification
541 - Physical chemistry
101
530 - Physics
34
546 - Inorganic chemistry
8
004 - Data processing & computer science
6
539 - Modern physics
6
547 - Organic chemistry
6
621 - Applied physics
5
620 - Engineering & allied operations
3
005 - Computer programming, programs & data
2
519 - Probabilities & applied mathematics
2
543 - Analytical chemistry
2
660 - Chemical engineering
2
000 - Computer science, information & general works
1
500 - Natural sciences & mathematics
1
514 - Topology
1
515 - Analysis
1
518 - Numerical analysis
1
531 - Classical mechanics; solid mechanics
1
536 - Heat
1
538 - Magnetism
1
540 - Chemistry & allied sciences
1
549 - Mineralogy
1
570 - Life sciences; biology
1
571 - Physiology & related subjects
1
572 - Biochemistry
1