Classification
320 - Political science
600 - Technology
2
800 - Literature & rhetoric
000 - Computer science, information & general works
1
170 - Ethics
1
330 - Economics
1
363 - Other social problems & services
1
370 - Education
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1