Classification
140 - Specific philosophical schools
340 - Law
363 - Other social problems & services
380 - Commerce, communications & transportation
600 - Technology
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
576 - Genetics & evolution
5
720 - Architecture
5
900 - History & geography
5
320 - Political science
3
500 - Natural sciences & mathematics
3
580 - Plants (Botany)
3
610 - Medicine & health
3
170 - Ethics
2
300 - Social sciences
2
333 - Economics of land & energy
2
630 - Agriculture & related technologies
2
800 - Literature & rhetoric
2
400 - Language
1
540 - Chemistry & allied sciences
1