Classification
581 - Specific topics in natural history
580 - Plants (Botany)
8
600 - Technology
7
333 - Economics of land & energy
4
363 - Other social problems & services
4
540 - Chemistry & allied sciences
4
576 - Genetics & evolution
3
612 - Human physiology
3
620 - Engineering & allied operations
3
590 - Animals (Zoology)
2
630 - Agriculture & related technologies
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
170 - Ethics
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
615 - Pharmacology & therapeutics
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1