Classification
615 - Pharmacology & therapeutics
57
616 - Diseases
9
668 - Technology of other organic products
9
612 - Human physiology
8
547 - Organic chemistry
6
632 - Plant injuries, diseases & pests
5
541 - Physical chemistry
4
574 - [Unassigned]
4
628 - Sanitary & municipal engineering
4
660 - Chemical engineering
4
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
363 - Other social problems & services
2
613 - Personal health & safety
2
621 - Applied physics
2
661 - Industrial chemicals
2
664 - Food technology
2
540 - Chemistry & allied sciences
1
546 - Inorganic chemistry
1
572 - Biochemistry
1
595 - Arthropods
1
610 - Medicine & health
1
631 - Techniques, equipment & materials
1
633 - Field & plantation crops
1
636 - Animal husbandry
1