Classification
140 - Specific philosophical schools
170 - Ethics
333 - Economics of land & energy
600 - Technology
700 - The arts; fine & decorative arts
4
340 - Law
3
363 - Other social problems & services
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
300 - Social sciences
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
610 - Medicine & health
2
720 - Architecture
2
800 - Literature & rhetoric
2
900 - History & geography
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
200 - Religion
1
304 - Factors affecting social behavior
1
330 - Economics
1
370 - Education
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1