Classification
540 - Chemistry & allied sciences
843
547 - Organic chemistry
35
541 - Physical chemistry
11
543 - Analytical chemistry
5
572 - Biochemistry
3
664 - Food technology
3
363 - Other social problems & services
2
539 - Modern physics
2
546 - Inorganic chemistry
2
612 - Human physiology
2
615 - Pharmacology & therapeutics
2
620 - Engineering & allied operations
2
001 - Knowledge
1
069 - Museum science
1
300 - Social sciences
1
302 - Social interaction
1
333 - Economics of land & energy
1
501 - Philosophy & theory
1
530 - Physics
1
542 - Techniques, equipment & materials
1
571 - Physiology & related subjects
1
610 - Medicine & health
1
616 - Diseases
1
631 - Techniques, equipment & materials
1
636 - Animal husbandry
1
660 - Chemical engineering
1
771 - Techniques, equipment & materials
1
808 - Rhetoric & collections of literature
1