Classification
570 - Life sciences; biology
123
571 - Physiology & related subjects
95
612 - Human physiology
54
660 - Chemical engineering
41
572 - Biochemistry
35
616 - Diseases
35
579 - Microorganisms, fungi & algae
28
576 - Genetics & evolution
24
630 - Agriculture & related technologies
21
610 - Medicine & health
19
615 - Pharmacology & therapeutics
17
577 - Ecology
16
592 - Invertebrates
16
631 - Techniques, equipment & materials
13
543 - Analytical chemistry
12
580 - Plants (Botany)
8
620 - Engineering & allied operations
8
333 - Economics of land & energy
7
551 - Geology, hydrology & meteorology
7
590 - Animals (Zoology)
5
581 - Specific topics in natural history
4
641 - Food & drink
4
664 - Food technology
4
547 - Organic chemistry
3
591 - Specific topics in natural history
3
617 - Surgery & related medical specialties
3
621 - Applied physics
3
636 - Animal husbandry
3
006 - Special computer methods
2
537 - Electricity & electronics
2
540 - Chemistry & allied sciences
2
611 - Human anatomy, cytology & histology
2
307 - Communities
1
340 - Law
1
341 - Law of nations
1
500 - Natural sciences & mathematics
1
541 - Physical chemistry
1
560 - Paleontology; paleozoology
1
596 - Chordates
1
599 - Mammals
1
601 - Philosophy & theory
1
614 - Incidence & prevention of disease
1
618 - Gynecology, obstetrics, pediatrics & geriatrics
1
632 - Plant injuries, diseases & pests
1
634 - Orchards, fruits & forestry
1
930 - History of ancient world to ca. 499
1