Classification
000 - Computer science, information & general works
500 - Natural sciences & mathematics
10
610 - Medicine & health
9
600 - Technology
7
700 - The arts; fine & decorative arts
7
333 - Economics of land & energy
6
380 - Commerce, communications & transportation
5
576 - Genetics & evolution
5
612 - Human physiology
4
580 - Plants (Botany)
3
720 - Architecture
3
140 - Specific philosophical schools
2
330 - Economics
2
363 - Other social problems & services
2
615 - Pharmacology & therapeutics
2
620 - Engineering & allied operations
2
400 - Language
1
530 - Physics
1
540 - Chemistry & allied sciences
1
581 - Specific topics in natural history
1