Classification
155 - Differential & developmental psychology
302 - Social interaction
128
658 - General management
79
158 - Applied psychology
66
330 - Economics
50
150 - Psychology
36
153 - Mental processes & intelligence
33
384 - Communications; telecommunication
28
650 - Management & auxiliary services
22
500 - Natural sciences & mathematics
20
331 - Labor economics
19
300 - Social sciences
17
380 - Commerce, communications & transportation
11
381 - Commerce
11
338 - Production
7
170 - Ethics
5
000 - Computer science, information & general works
4
006 - Special computer methods
4
670 - Manufacturing
4
303 - Social processes
3
100 - Philosophy & psychology
2
152 - Perception, movement, emotions & drives
2
591 - Specific topics in natural history
2
620 - Engineering & allied operations
2
651 - Office services
2
745 - Decorative arts
2
001 - Knowledge
1
011 - Bibliographies
1
168 - Argument & persuasion
1
179 - Other ethical norms
1
358 - Air & other specialized forces
1
362 - Social welfare problems & services
1
374 - Adult education
1
510 - Mathematics
1
612 - Human physiology
1
616 - Diseases
1
659 - Advertising & public relations
1
808 - Rhetoric & collections of literature
1