Classification
571 - Physiology & related subjects
1,541
616 - Diseases
363
572 - Biochemistry
359
610 - Medicine & health
185
612 - Human physiology
172
614 - Incidence & prevention of disease
113
611 - Human anatomy, cytology & histology
103
580 - Plants (Botany)
95
615 - Pharmacology & therapeutics
79
579 - Microorganisms, fungi & algae
76
570 - Life sciences; biology
74
660 - Chemical engineering
58
590 - Animals (Zoology)
53
599 - Mammals
48
630 - Agriculture & related technologies
37
617 - Surgery & related medical specialties
19
576 - Genetics & evolution
16
618 - Gynecology, obstetrics, pediatrics & geriatrics
15
620 - Engineering & allied operations
15
577 - Ecology
14
573 - Specific physiological systems in animals
12
530 - Physics
11
543 - Analytical chemistry
11
547 - Organic chemistry
11
581 - Specific topics in natural history
9
591 - Specific topics in natural history
8
301 - Sociology & anthropology
6
500 - Natural sciences & mathematics
6
546 - Inorganic chemistry
5
004 - Data processing & computer science
4
541 - Physical chemistry
4
621 - Applied physics
4
003 - Systems
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
515 - Analysis
2
520 - Astronomy & allied sciences
2
551 - Geology, hydrology & meteorology
2
560 - Paleontology; paleozoology
2
595 - Arthropods
2
631 - Techniques, equipment & materials
2
636 - Animal husbandry
2
670 - Manufacturing
2
006 - Special computer methods
1
140 - Specific philosophical schools
1
170 - Ethics
1
174 - Occupational ethics
1
306 - Culture & institutions
1
338 - Production
1
510 - Mathematics
1
more ...