Classification
100 - Philosophy & psychology
500 - Natural sciences & mathematics
200 - Religion
2
363 - Other social problems & services
2
530 - Physics
2
581 - Specific topics in natural history
2
700 - The arts; fine & decorative arts
2
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
170 - Ethics
1
340 - Law
1
580 - Plants (Botany)
1