Classification
330 - Economics
363 - Other social problems & services
600 - Technology
9
620 - Engineering & allied operations
658 - General management
700 - The arts; fine & decorative arts
333 - Economics of land & energy
7
000 - Computer science, information & general works
4
380 - Commerce, communications & transportation
4
900 - History & geography
4
320 - Political science
3
580 - Plants (Botany)
3
140 - Specific philosophical schools
2
370 - Education
2
610 - Medicine & health
2
720 - Architecture
2
800 - Literature & rhetoric
2
160 - Logic
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1