Classification
720 - Architecture
620 - Engineering & allied operations
3
000 - Computer science, information & general works
2
700 - The arts; fine & decorative arts
2
363 - Other social problems & services
1
370 - Education
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
600 - Technology
1
610 - Medicine & health
1
900 - History & geography
1