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