Classification
300 - Social sciences
330 - Economics
21
658 - General management
19
302 - Social interaction
13
001 - Knowledge
10
500 - Natural sciences & mathematics
9
670 - Manufacturing
9
158 - Applied psychology
6
331 - Labor economics
6
338 - Production
6
650 - Management & auxiliary services
6
320 - Political science
4
153 - Mental processes & intelligence
2
170 - Ethics
2
301 - Sociology & anthropology
2
333 - Economics of land & energy
2
900 - History & geography
2
100 - Philosophy & psychology
1
150 - Psychology
1
303 - Social processes
1
332 - Financial economics
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
364 - Criminology
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
604 - Special topics
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
741 - Drawing & drawings
1
745 - Decorative arts
1
780 - Music
1