Classification
600 - Technology
7
620 - Engineering & allied operations
7
900 - History & geography
5
630 - Agriculture & related technologies
4
000 - Computer science, information & general works
3
580 - Plants (Botany)
3
700 - The arts; fine & decorative arts
3
333 - Economics of land & energy
2
363 - Other social problems & services
2
610 - Medicine & health
2
140 - Specific philosophical schools
1
320 - Political science
1
414 - Phonology & phonetics
1
550 - Earth sciences
1
576 - Genetics & evolution
1
720 - Architecture
1