Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
610 - Medicine & health
700 - The arts; fine & decorative arts
8
576 - Genetics & evolution
7
333 - Economics of land & energy
6
363 - Other social problems & services
6
540 - Chemistry & allied sciences
5
620 - Engineering & allied operations
5
380 - Commerce, communications & transportation
4
500 - Natural sciences & mathematics
4
551 - Geology, hydrology & meteorology
4
580 - Plants (Botany)
4
581 - Specific topics in natural history
4
612 - Human physiology
4
300 - Social sciences
3
414 - Phonology & phonetics
3
600 - Technology
2
400 - Language
1
615 - Pharmacology & therapeutics
1