Classification
610 - Medicine & health
900 - History & geography
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
580 - Plants (Botany)
2
330 - Economics
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
600 - Technology
1
612 - Human physiology
1
620 - Engineering & allied operations
1