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