Classification
571 - Physiology & related subjects
129
572 - Biochemistry
124
580 - Plants (Botany)
100
581 - Specific topics in natural history
59
660 - Chemical engineering
55
630 - Agriculture & related technologies
40
579 - Microorganisms, fungi & algae
27
631 - Techniques, equipment & materials
27
615 - Pharmacology & therapeutics
19
547 - Organic chemistry
18
664 - Food technology
16
641 - Food & drink
14
570 - Life sciences; biology
10
577 - Ecology
9
333 - Economics of land & energy
7
610 - Medicine & health
5
620 - Engineering & allied operations
5
540 - Chemistry & allied sciences
3
613 - Personal health & safety
3
628 - Sanitary & municipal engineering
3
543 - Analytical chemistry
2
576 - Genetics & evolution
2
578 - Natural history of organisms
2
612 - Human physiology
2
616 - Diseases
2
634 - Orchards, fruits & forestry
2
338 - Production
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
553 - Economic geology
1
573 - Specific physiological systems in animals
1
614 - Incidence & prevention of disease
1
621 - Applied physics
1