Classification
170 - Ethics
330 - Economics
35
658 - General management
22
300 - Social sciences
10
320 - Political science
10
331 - Labor economics
9
174 - Occupational ethics
7
302 - Social interaction
7
158 - Applied psychology
6
610 - Medicine & health
6
100 - Philosophy & psychology
5
338 - Production
5
900 - History & geography
5
650 - Management & auxiliary services
4
670 - Manufacturing
4
140 - Specific philosophical schools
3
200 - Religion
3
340 - Law
3
500 - Natural sciences & mathematics
3
659 - Advertising & public relations
3
361 - Social problems & social welfare in general
2
381 - Commerce
2
384 - Communications; telecommunication
2
400 - Language
2
001 - Knowledge
1
120 - Epistemology, causation & humankind
1
303 - Social processes
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
355 - Military science
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
780 - Music
1