Classification
616 - Diseases
181
610 - Medicine & health
103
509 - Historical, geographic & persons treatment
23
617 - Surgery & related medical specialties
23
900 - History & geography
14
306 - Culture & institutions
13
614 - Incidence & prevention of disease
11
174 - Occupational ethics
8
615 - Pharmacology & therapeutics
8
940 - History of Europe
8
571 - Physiology & related subjects
7
618 - Gynecology, obstetrics, pediatrics & geriatrics
7
540 - Chemistry & allied sciences
6
612 - Human physiology
6
100 - Philosophy & psychology
5
170 - Ethics
5
570 - Life sciences; biology
5
613 - Personal health & safety
5
006 - Special computer methods
4
301 - Sociology & anthropology
4
941 - British Isles
4
109 - Historical & collected persons treatment
3
150 - Psychology
3
300 - Social sciences
3
344 - Labor, social, education & cultural law
3
611 - Human anatomy, cytology & histology
3
140 - Specific philosophical schools
2
155 - Differential & developmental psychology
2
325 - International migration & colonization
2
330 - Economics
2
501 - Philosophy & theory
2
579 - Microorganisms, fungi & algae
2
909 - World history
2
936 - Europe north & west of Italy to ca. 499
2
945 - Italian Peninsula & adjacent islands
2
061 - Organizations in North America
1
111 - Ontology
1
302 - Social interaction
1
303 - Social processes
1
320 - Political science
1
333 - Economics of land & energy
1
338 - Production
1
340 - Law
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
1
363 - Other social problems & services
1
378 - Higher education
1
418 - Standard usage & applied linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
more ...