Classification
616 - Diseases
188
610 - Medicine & health
184
900 - History & geography
124
617 - Surgery & related medical specialties
24
509 - Historical, geographic & persons treatment
23
100 - Philosophy & psychology
14
320 - Political science
14
306 - Culture & institutions
13
614 - Incidence & prevention of disease
13
170 - Ethics
10
300 - Social sciences
10
174 - Occupational ethics
8
140 - Specific philosophical schools
7
200 - Religion
7
540 - Chemistry & allied sciences
7
612 - Human physiology
7
615 - Pharmacology & therapeutics
7
618 - Gynecology, obstetrics, pediatrics & geriatrics
7
940 - History of Europe
7
600 - Technology
6
301 - Sociology & anthropology
5
330 - Economics
5
370 - Education
5
570 - Life sciences; biology
5
571 - Physiology & related subjects
5
613 - Personal health & safety
5
361 - Social problems & social welfare in general
4
500 - Natural sciences & mathematics
4
941 - British Isles
4
109 - Historical & collected persons treatment
3
150 - Psychology
3
340 - Law
3
344 - Labor, social, education & cultural law
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
611 - Human anatomy, cytology & histology
3
155 - Differential & developmental psychology
2
325 - International migration & colonization
2
333 - Economics of land & energy
2
362 - Social welfare problems & services
2
501 - Philosophy & theory
2
551 - Geology, hydrology & meteorology
2
579 - Microorganisms, fungi & algae
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
791 - Public performances
2
909 - World history
2
more ...