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