Classification
150 - Psychology
658 - General management
135
330 - Economics
119
158 - Applied psychology
85
302 - Social interaction
78
650 - Management & auxiliary services
64
384 - Communications; telecommunication
53
300 - Social sciences
51
153 - Mental processes & intelligence
50
155 - Differential & developmental psychology
37
331 - Labor economics
37
380 - Commerce, communications & transportation
25
381 - Commerce
19
500 - Natural sciences & mathematics
19
338 - Production
15
000 - Computer science, information & general works
11
670 - Manufacturing
10
303 - Social processes
8
011 - Bibliographies
3
808 - Rhetoric & collections of literature
3
651 - Office services
2
001 - Knowledge
1
152 - Perception, movement, emotions & drives
1
168 - Argument & persuasion
1
170 - Ethics
1
294 - Religions of Indic origin
1
358 - Air & other specialized forces
1
364 - Criminology
1
374 - Adult education
1
395 - Etiquette (Manners)
1
510 - Mathematics
1
613 - Personal health & safety
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1