Classification
541 - Physical chemistry
31
540 - Chemistry & allied sciences
9
004 - Data processing & computer science
8
006 - Special computer methods
6
518 - Numerical analysis
5
570 - Life sciences; biology
5
615 - Pharmacology & therapeutics
5
000 - Computer science, information & general works
3
519 - Probabilities & applied mathematics
3
572 - Biochemistry
3
610 - Medicine & health
3
660 - Chemical engineering
3
005 - Computer programming, programs & data
2
500 - Natural sciences & mathematics
2
543 - Analytical chemistry
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
370 - Education
1
539 - Modern physics
1
546 - Inorganic chemistry
1
547 - Organic chemistry
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
571 - Physiology & related subjects
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
612 - Human physiology
1
614 - Incidence & prevention of disease
1
620 - Engineering & allied operations
1
628 - Sanitary & municipal engineering
1
700 - The arts; fine & decorative arts
1