Classification
616 - Diseases
1,015
610 - Medicine & health
948
612 - Human physiology
338
700 - The arts; fine & decorative arts
199
570 - Life sciences; biology
138
613 - Personal health & safety
126
615 - Pharmacology & therapeutics
110
150 - Psychology
105
155 - Differential & developmental psychology
99
617 - Surgery & related medical specialties
98
370 - Education
97
140 - Specific philosophical schools
94
333 - Economics of land & energy
87
000 - Computer science, information & general works
82
571 - Physiology & related subjects
79
600 - Technology
75
330 - Economics
62
580 - Plants (Botany)
62
614 - Incidence & prevention of disease
60
100 - Philosophy & psychology
59
363 - Other social problems & services
58
620 - Engineering & allied operations
55
572 - Biochemistry
44
006 - Special computer methods
42
380 - Commerce, communications & transportation
41
061 - Organizations in North America
37
540 - Chemistry & allied sciences
36
900 - History & geography
36
306 - Culture & institutions
33
576 - Genetics & evolution
30
618 - Gynecology, obstetrics, pediatrics & geriatrics
30
500 - Natural sciences & mathematics
28
158 - Applied psychology
27
301 - Sociology & anthropology
27
543 - Analytical chemistry
25
170 - Ethics
24
300 - Social sciences
24
660 - Chemical engineering
24
362 - Social welfare problems & services
23
320 - Political science
21
361 - Social problems & social welfare in general
21
658 - General management
20
547 - Organic chemistry
15
304 - Factors affecting social behavior
12
340 - Law
12
800 - Literature & rhetoric
12
364 - Criminology
11
519 - Probabilities & applied mathematics
10
174 - Occupational ethics
9
414 - Phonology & phonetics
9
more ...