Classification
618 - Gynecology, obstetrics, pediatrics & geriatrics
26
613 - Personal health & safety
18
616 - Diseases
8
610 - Medicine & health
7
617 - Surgery & related medical specialties
5
155 - Differential & developmental psychology
4
304 - Factors affecting social behavior
2
572 - Biochemistry
2
614 - Incidence & prevention of disease
2
306 - Culture & institutions
1
330 - Economics
1
340 - Law
1
361 - Social problems & social welfare in general
1
370 - Education
1
372 - Elementary education
1
502 - Miscellany
1
571 - Physiology & related subjects
1
700 - The arts; fine & decorative arts
1