Classification
610 - Medicine & health
2,018
616 - Diseases
184
615 - Pharmacology & therapeutics
87
617 - Surgery & related medical specialties
75
614 - Incidence & prevention of disease
35
570 - Life sciences; biology
32
613 - Personal health & safety
31
612 - Human physiology
30
150 - Psychology
26
344 - Labor, social, education & cultural law
24
579 - Microorganisms, fungi & algae
24
611 - Human anatomy, cytology & histology
21
618 - Gynecology, obstetrics, pediatrics & geriatrics
19
540 - Chemistry & allied sciences
14
330 - Economics
9
571 - Physiology & related subjects
8
572 - Biochemistry
7
361 - Social problems & social welfare in general
6
515 - Analysis
6
590 - Animals (Zoology)
6
599 - Mammals
6
301 - Sociology & anthropology
5
306 - Culture & institutions
5
370 - Education
5
530 - Physics
5
547 - Organic chemistry
5
620 - Engineering & allied operations
5
155 - Differential & developmental psychology
4
320 - Political science
4
340 - Law
4
353 - Specific fields of public administration
4
543 - Analytical chemistry
4
302 - Social interaction
3
519 - Probabilities & applied mathematics
3
541 - Physical chemistry
3
576 - Genetics & evolution
3
660 - Chemical engineering
3
120 - Epistemology, causation & humankind
2
160 - Logic
2
338 - Production
2
362 - Social welfare problems & services
2
500 - Natural sciences & mathematics
2
520 - Astronomy & allied sciences
2
577 - Ecology
2
580 - Plants (Botany)
2
621 - Applied physics
2
629 - Other branches of engineering
2
636 - Animal husbandry
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
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