Classification
158 - Applied psychology
365
658 - General management
58
150 - Psychology
31
100 - Philosophy & psychology
24
306 - Culture & institutions
22
616 - Diseases
15
370 - Education
12
155 - Differential & developmental psychology
11
302 - Social interaction
10
330 - Economics
10
333 - Economics of land & energy
7
610 - Medicine & health
7
301 - Sociology & anthropology
6
650 - Management & auxiliary services
5
152 - Perception, movement, emotions & drives
4
300 - Social sciences
4
670 - Manufacturing
4
153 - Mental processes & intelligence
3
613 - Personal health & safety
3
614 - Incidence & prevention of disease
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
005 - Computer programming, programs & data
2
170 - Ethics
2
305 - Social groups
2
320 - Political science
2
363 - Other social problems & services
2
364 - Criminology
2
380 - Commerce, communications & transportation
2
629 - Other branches of engineering
2
120 - Epistemology, causation & humankind
1
174 - Occupational ethics
1
332 - Financial economics
1
340 - Law
1
342 - Constitutional & administrative law
1
344 - Labor, social, education & cultural law
1
347 - Civil procedure & courts
1
362 - Social welfare problems & services
1
371 - Schools & their activities; special education
1
374 - Adult education
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
600 - Technology
1
621 - Applied physics
1
630 - Agriculture & related technologies
1
690 - Buildings
1
780 - Music
1
800 - Literature & rhetoric
1
900 - History & geography
1