Classification
333 - Economics of land & energy
3
600 - Technology
620 - Engineering & allied operations
3
900 - History & geography
3
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
363 - Other social problems & services
1
530 - Physics
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
800 - Literature & rhetoric
1