Classification
615 - Pharmacology & therapeutics
193
610 - Medicine & health
62
616 - Diseases
42
617 - Surgery & related medical specialties
9
618 - Gynecology, obstetrics, pediatrics & geriatrics
9
700 - The arts; fine & decorative arts
8
370 - Education
7
363 - Other social problems & services
5
333 - Economics of land & energy
4
613 - Personal health & safety
4
100 - Philosophy & psychology
3
155 - Differential & developmental psychology
3
362 - Social welfare problems & services
3
600 - Technology
3
612 - Human physiology
3
140 - Specific philosophical schools
2
158 - Applied psychology
2
614 - Incidence & prevention of disease
2
000 - Computer science, information & general works
1
150 - Psychology
1
170 - Ethics
1
200 - Religion
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
306 - Culture & institutions
1
320 - Political science
1
380 - Commerce, communications & transportation
1
400 - Language
1
500 - Natural sciences & mathematics
1
629 - Other branches of engineering
1
658 - General management
1
900 - History & geography
1