Classification
616 - Diseases
333
571 - Physiology & related subjects
128
610 - Medicine & health
69
570 - Life sciences; biology
46
572 - Biochemistry
45
615 - Pharmacology & therapeutics
22
579 - Microorganisms, fungi & algae
19
000 - Computer science, information & general works
17
614 - Incidence & prevention of disease
17
612 - Human physiology
14
700 - The arts; fine & decorative arts
14
363 - Other social problems & services
12
140 - Specific philosophical schools
11
617 - Surgery & related medical specialties
11
333 - Economics of land & energy
9
620 - Engineering & allied operations
9
600 - Technology
8
500 - Natural sciences & mathematics
7
001 - Knowledge
6
300 - Social sciences
6
304 - Factors affecting social behavior
6
576 - Genetics & evolution
6
006 - Special computer methods
5
380 - Commerce, communications & transportation
5
580 - Plants (Botany)
5
613 - Personal health & safety
5
618 - Gynecology, obstetrics, pediatrics & geriatrics
5
540 - Chemistry & allied sciences
4
611 - Human anatomy, cytology & histology
4
577 - Ecology
2
590 - Animals (Zoology)
2
599 - Mammals
2
660 - Chemical engineering
2
800 - Literature & rhetoric
2
003 - Systems
1
005 - Computer programming, programs & data
1
061 - Organizations in North America
1
170 - Ethics
1
301 - Sociology & anthropology
1
306 - Culture & institutions
1
340 - Law
1
414 - Phonology & phonetics
1
510 - Mathematics
1
514 - Topology
1
518 - Numerical analysis
1
519 - Probabilities & applied mathematics
1
531 - Classical mechanics; solid mechanics
1
541 - Physical chemistry
1
547 - Organic chemistry
1
629 - Other branches of engineering
1
more ...