Classification
571 - Physiology & related subjects
1,493
616 - Diseases
402
572 - Biochemistry
282
610 - Medicine & health
155
612 - Human physiology
148
570 - Life sciences; biology
94
579 - Microorganisms, fungi & algae
91
580 - Plants (Botany)
78
615 - Pharmacology & therapeutics
68
660 - Chemical engineering
59
630 - Agriculture & related technologies
41
590 - Animals (Zoology)
30
620 - Engineering & allied operations
24
547 - Organic chemistry
17
581 - Specific topics in natural history
17
576 - Genetics & evolution
15
530 - Physics
12
617 - Surgery & related medical specialties
11
900 - History & geography
11
611 - Human anatomy, cytology & histology
10
577 - Ecology
9
700 - The arts; fine & decorative arts
9
543 - Analytical chemistry
8
631 - Techniques, equipment & materials
8
500 - Natural sciences & mathematics
7
000 - Computer science, information & general works
6
333 - Economics of land & energy
6
363 - Other social problems & services
6
380 - Commerce, communications & transportation
6
540 - Chemistry & allied sciences
6
546 - Inorganic chemistry
6
600 - Technology
6
618 - Gynecology, obstetrics, pediatrics & geriatrics
6
140 - Specific philosophical schools
5
551 - Geology, hydrology & meteorology
5
613 - Personal health & safety
5
621 - Applied physics
5
004 - Data processing & computer science
4
300 - Social sciences
4
414 - Phonology & phonetics
3
541 - Physical chemistry
3
003 - Systems
2
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
510 - Mathematics
2
560 - Paleontology; paleozoology
2
573 - Specific physiological systems in animals
2
574 - [Unassigned]
2
592 - Invertebrates
2
628 - Sanitary & municipal engineering
2
more ...