Classification
600 - Technology
4
800 - Literature & rhetoric
330 - Economics
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
363 - Other social problems & services
2
140 - Specific philosophical schools
1
320 - Political science
1
370 - Education
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
658 - General management
1
900 - History & geography
1