Classification
370 - Education
320 - Political science
3
333 - Economics of land & energy
3
304 - Factors affecting social behavior
2
363 - Other social problems & services
2
610 - Medicine & health
2
000 - Computer science, information & general works
1
330 - Economics
1
336 - Public finance
1
580 - Plants (Botany)
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
658 - General management
1