Classification
580 - Plants (Botany)
8
570 - Life sciences; biology
7
700 - The arts; fine & decorative arts
7
000 - Computer science, information & general works
6
610 - Medicine & health
5
333 - Economics of land & energy
4
363 - Other social problems & services
3
600 - Technology
3
500 - Natural sciences & mathematics
2
540 - Chemistry & allied sciences
2
620 - Engineering & allied operations
2
900 - History & geography
2
100 - Philosophy & psychology
1
330 - Economics
1
380 - Commerce, communications & transportation
1
400 - Language
1
514 - Topology
1
576 - Genetics & evolution
1
668 - Technology of other organic products
1
800 - Literature & rhetoric
1
830 - Literatures of Germanic languages
1