Classification
100 - Philosophy & psychology
200 - Religion
4
530 - Physics
4
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
3
320 - Political science
3
170 - Ethics
2
300 - Social sciences
2
301 - Sociology & anthropology
2
581 - Specific topics in natural history
2
800 - Literature & rhetoric
2
900 - History & geography
2
000 - Computer science, information & general works
1
120 - Epistemology, causation & humankind
1
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
500 - Natural sciences & mathematics
1
580 - Plants (Botany)
1
610 - Medicine & health
1