Classification
363 - Other social problems & services
580 - Plants (Botany)
600 - Technology
700 - The arts; fine & decorative arts
6
610 - Medicine & health
5
620 - Engineering & allied operations
5
630 - Agriculture & related technologies
4
140 - Specific philosophical schools
3
900 - History & geography
3
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2