Classification
610 - Medicine & health
7
700 - The arts; fine & decorative arts
6
580 - Plants (Botany)
5
333 - Economics of land & energy
4
330 - Economics
3
630 - Agriculture & related technologies
3
000 - Computer science, information & general works
2
363 - Other social problems & services
2
400 - Language
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
414 - Phonology & phonetics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
612 - Human physiology
1
620 - Engineering & allied operations
1
900 - History & geography
1