Classification
330 - Economics
3
333 - Economics of land & energy
3
580 - Plants (Botany)
3
600 - Technology
620 - Engineering & allied operations
630 - Agriculture & related technologies
658 - General management
900 - History & geography
140 - Specific philosophical schools
2
700 - The arts; fine & decorative arts
2
297 - Islam, Babism & Bahai Faith
1
363 - Other social problems & services
1
581 - Specific topics in natural history
1
610 - Medicine & health
1