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