Classification
330 - Economics
650 - Management & auxiliary services
158 - Applied psychology
104
658 - General management
80
331 - Labor economics
31
153 - Mental processes & intelligence
21
300 - Social sciences
21
381 - Commerce
17
005 - Computer programming, programs & data
15
338 - Production
14
302 - Social interaction
13
332 - Financial economics
11
339 - Macroeconomics & related topics
8
155 - Differential & developmental psychology
7
170 - Ethics
7
384 - Communications; telecommunication
7
150 - Psychology
6
500 - Natural sciences & mathematics
6
320 - Political science
4
361 - Social problems & social welfare in general
4
610 - Medicine & health
4
000 - Computer science, information & general works
2
001 - Knowledge
2
380 - Commerce, communications & transportation
2
011 - Bibliographies
1
340 - Law
1
620 - Engineering & allied operations
1
670 - Manufacturing
1