Classification
330 - Economics
333 - Economics of land & energy
2
363 - Other social problems & services
2
600 - Technology
658 - General management
2
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
1
320 - Political science
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
900 - History & geography
1