Classification
170 - Ethics
320 - Political science
363 - Other social problems & services
330 - Economics
2
333 - Economics of land & energy
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
340 - Law
1
370 - Education
1
380 - Commerce, communications & transportation
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
658 - General management
1
800 - Literature & rhetoric
1