Classification
600 - Technology
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
8
333 - Economics of land & energy
5
610 - Medicine & health
5
900 - History & geography
5
414 - Phonology & phonetics
3
612 - Human physiology
3
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
540 - Chemistry & allied sciences
2
580 - Plants (Botany)
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
330 - Economics
1
630 - Agriculture & related technologies
1