Classification
140 - Specific philosophical schools
6
580 - Plants (Botany)
700 - The arts; fine & decorative arts
610 - Medicine & health
3
363 - Other social problems & services
2
600 - Technology
2
330 - Economics
1
333 - Economics of land & energy
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1