Classification
330 - Economics
333 - Economics of land & energy
3
363 - Other social problems & services
600 - Technology
3
620 - Engineering & allied operations
3
720 - Architecture
900 - History & geography
2
320 - Political science
1
370 - Education
1
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
658 - General management
1
700 - The arts; fine & decorative arts
1