Classification
170 - Ethics
530 - Physics
700 - The arts; fine & decorative arts
100 - Philosophy & psychology
5
120 - Epistemology, causation & humankind
4
200 - Religion
4
140 - Specific philosophical schools
3
333 - Economics of land & energy
2
340 - Law
2
370 - Education
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
600 - Technology
2
000 - Computer science, information & general works
1
296 - Judaism
1
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
363 - Other social problems & services
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
900 - History & geography
1