Classification
380 - Commerce, communications & transportation
580 - Plants (Botany)
600 - Technology
610 - Medicine & health
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
363 - Other social problems & services
6
333 - Economics of land & energy
5
630 - Agriculture & related technologies
5
000 - Computer science, information & general works
4
140 - Specific philosophical schools
3
340 - Law
3
900 - History & geography
3
170 - Ethics
2
300 - Social sciences
2
576 - Genetics & evolution
2
720 - Architecture
2
800 - Literature & rhetoric
2
400 - Language
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
612 - Human physiology
1