Classification
330 - Economics
370 - Education
580 - Plants (Botany)
333 - Economics of land & energy
6
600 - Technology
6
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
620 - Engineering & allied operations
4
658 - General management
4
900 - History & geography
3
000 - Computer science, information & general works
2
380 - Commerce, communications & transportation
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
610 - Medicine & health
2
630 - Agriculture & related technologies
2
140 - Specific philosophical schools
1
320 - Political science
1
336 - Public finance
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
720 - Architecture
1