Classification
363 - Other social problems & services
600 - Technology
2
612 - Human physiology
620 - Engineering & allied operations
900 - History & geography
140 - Specific philosophical schools
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1