Classification
000 - Computer science, information & general works
900 - History & geography
600 - Technology
10
620 - Engineering & allied operations
9
363 - Other social problems & services
4
658 - General management
4
330 - Economics
3
333 - Economics of land & energy
3
610 - Medicine & health
3
700 - The arts; fine & decorative arts
3
140 - Specific philosophical schools
2
551 - Geology, hydrology & meteorology
2
304 - Factors affecting social behavior
1
320 - Political science
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
720 - Architecture
1
800 - Literature & rhetoric
1