Classification
330 - Economics
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
000 - Computer science, information & general works
3
363 - Other social problems & services
3
610 - Medicine & health
3
320 - Political science
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
600 - Technology
2
140 - Specific philosophical schools
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1