Classification
000 - Computer science, information & general works
700 - The arts; fine & decorative arts
6
333 - Economics of land & energy
5
500 - Natural sciences & mathematics
5
610 - Medicine & health
5
580 - Plants (Botany)
4
600 - Technology
4
576 - Genetics & evolution
3
140 - Specific philosophical schools
2
540 - Chemistry & allied sciences
2
612 - Human physiology
2
320 - Political science
1
330 - Economics
1
363 - Other social problems & services
1
400 - Language
1
410 - Linguistics
1
615 - Pharmacology & therapeutics
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1
900 - History & geography
1