Classification
576 - Genetics & evolution
610 - Medicine & health
9
000 - Computer science, information & general works
4
333 - Economics of land & energy
3
540 - Chemistry & allied sciences
3
580 - Plants (Botany)
3
700 - The arts; fine & decorative arts
3
363 - Other social problems & services
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
340 - Law
1
400 - Language
1
500 - Natural sciences & mathematics
1
581 - Specific topics in natural history
1
800 - Literature & rhetoric
1