Classification
333 - Economics of land & energy
600 - Technology
8
700 - The arts; fine & decorative arts
8
540 - Chemistry & allied sciences
5
620 - Engineering & allied operations
5
610 - Medicine & health
4
900 - History & geography
4
000 - Computer science, information & general works
2
363 - Other social problems & services
2
140 - Specific philosophical schools
1
340 - Law
1
414 - Phonology & phonetics
1
530 - Physics
1
580 - Plants (Botany)
1
800 - Literature & rhetoric
1