Classification
150 - Psychology
515
616 - Diseases
105
158 - Applied psychology
40
155 - Differential & developmental psychology
31
610 - Medicine & health
20
302 - Social interaction
16
305 - Social groups
14
618 - Gynecology, obstetrics, pediatrics & geriatrics
11
658 - General management
10
330 - Economics
9
370 - Education
8
320 - Political science
7
570 - Life sciences; biology
7
612 - Human physiology
7
300 - Social sciences
5
306 - Culture & institutions
5
153 - Mental processes & intelligence
3
301 - Sociology & anthropology
3
331 - Labor economics
3
501 - Philosophy & theory
3
650 - Management & auxiliary services
3
154 - Subconscious & altered states
2
170 - Ethics
2
519 - Probabilities & applied mathematics
2
590 - Animals (Zoology)
2
001 - Knowledge
1
005 - Computer programming, programs & data
1
006 - Special computer methods
1
100 - Philosophy & psychology
1
111 - Ontology
1
128 - Humankind
1
146 - Naturalism & related systems
1
303 - Social processes
1
304 - Factors affecting social behavior
1
332 - Financial economics
1
338 - Production
1
344 - Labor, social, education & cultural law
1
361 - Social problems & social welfare in general
1
362 - Social welfare problems & services
1
363 - Other social problems & services
1
364 - Criminology
1
371 - Schools & their activities; special education
1
384 - Communications; telecommunication
1
401 - Philosophy & theory
1
502 - Miscellany
1
534 - Sound & related vibrations
1
599 - Mammals
1
611 - Human anatomy, cytology & histology
1
615 - Pharmacology & therapeutics
1
617 - Surgery & related medical specialties
1
more ...