Classification
333 - Economics of land & energy
600 - Technology
6
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
6
900 - History & geography
576 - Genetics & evolution
5
000 - Computer science, information & general works
3
610 - Medicine & health
2
720 - Architecture
2
140 - Specific philosophical schools
1
330 - Economics
1
580 - Plants (Botany)
1