Classification
330 - Economics
588
333 - Economics of land & energy
9
380 - Commerce, communications & transportation
9
320 - Political science
6
363 - Other social problems & services
6
000 - Computer science, information & general works
4
600 - Technology
4
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
370 - Education
2
551 - Geology, hydrology & meteorology
2
630 - Agriculture & related technologies
2
658 - General management
2
900 - History & geography
2
300 - Social sciences
1
336 - Public finance
1
340 - Law
1
576 - Genetics & evolution
1
610 - Medicine & health
1
800 - Literature & rhetoric
1