Classification
100 - Philosophy & psychology
120 - Epistemology, causation & humankind
170 - Ethics
200 - Religion
140 - Specific philosophical schools
6
700 - The arts; fine & decorative arts
4
320 - Political science
2
400 - Language
2
530 - Physics
2
000 - Computer science, information & general works
1
160 - Logic
1
300 - Social sciences
1
363 - Other social problems & services
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
900 - History & geography
1