Classification
616 - Diseases
834
617 - Surgery & related medical specialties
446
610 - Medicine & health
125
618 - Gynecology, obstetrics, pediatrics & geriatrics
43
006 - Special computer methods
13
612 - Human physiology
13
615 - Pharmacology & therapeutics
13
700 - The arts; fine & decorative arts
9
362 - Social welfare problems & services
6
614 - Incidence & prevention of disease
6
061 - Organizations in North America
4
140 - Specific philosophical schools
4
000 - Computer science, information & general works
3
170 - Ethics
3
320 - Political science
3
333 - Economics of land & energy
3
370 - Education
3
570 - Life sciences; biology
3
580 - Plants (Botany)
3
613 - Personal health & safety
3
100 - Philosophy & psychology
2
150 - Psychology
2
340 - Law
2
361 - Social problems & social welfare in general
2
380 - Commerce, communications & transportation
2
571 - Physiology & related subjects
2
600 - Technology
2
001 - Knowledge
1
179 - Other ethical norms
1
300 - Social sciences
1
301 - Sociology & anthropology
1
330 - Economics
1
344 - Labor, social, education & cultural law
1
353 - Specific fields of public administration
1
363 - Other social problems & services
1
400 - Language
1
579 - Microorganisms, fungi & algae
1
620 - Engineering & allied operations
1
636 - Animal husbandry
1