Classification
170 - Ethics
658 - General management
330 - Economics
4
380 - Commerce, communications & transportation
3
140 - Specific philosophical schools
2
320 - Political science
2
333 - Economics of land & energy
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
350 - Public administration & military science
1
363 - Other social problems & services
1
370 - Education
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1