Classification
100 - Philosophy & psychology
170 - Ethics
200 - Religion
340 - Law
140 - Specific philosophical schools
7
700 - The arts; fine & decorative arts
3
900 - History & geography
3
297 - Islam, Babism & Bahai Faith
2
320 - Political science
2
333 - Economics of land & energy
2
610 - Medicine & health
2
120 - Epistemology, causation & humankind
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1