Classification
320 - Political science
330 - Economics
361 - Social problems & social welfare in general
333 - Economics of land & energy
11
700 - The arts; fine & decorative arts
7
610 - Medicine & health
6
140 - Specific philosophical schools
5
300 - Social sciences
5
360 - Social problems & services; associations
5
340 - Law
4
600 - Technology
4
000 - Computer science, information & general works
3
100 - Philosophy & psychology
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
580 - Plants (Botany)
3
900 - History & geography
3
170 - Ethics
2
350 - Public administration & military science
2
658 - General management
2
304 - Factors affecting social behavior
1
336 - Public finance
1
364 - Criminology
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1
800 - Literature & rhetoric
1