Classification
580 - Plants (Botany)
600 - Technology
620 - Engineering & allied operations
13
700 - The arts; fine & decorative arts
12
333 - Economics of land & energy
9
900 - History & geography
9
363 - Other social problems & services
6
330 - Economics
5
000 - Computer science, information & general works
4
610 - Medicine & health
3
140 - Specific philosophical schools
2
630 - Agriculture & related technologies
2
720 - Architecture
2
380 - Commerce, communications & transportation
1
414 - Phonology & phonetics
1
612 - Human physiology
1