Classification
300 - Social sciences
580 - Plants (Botany)
600 - Technology
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
610 - Medicine & health
4
620 - Engineering & allied operations
4
630 - Agriculture & related technologies
3
900 - History & geography
3
140 - Specific philosophical schools
2
170 - Ethics
2
333 - Economics of land & energy
2
340 - Law
2
380 - Commerce, communications & transportation
2
576 - Genetics & evolution
2
720 - Architecture
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
320 - Political science
1
581 - Specific topics in natural history
1