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