Classification
800 - Literature & rhetoric
610 - Medicine & health
20
900 - History & geography
9
700 - The arts; fine & decorative arts
6
330 - Economics
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
580 - Plants (Botany)
2
170 - Ethics
1
363 - Other social problems & services
1
600 - Technology
1
720 - Architecture
1