Classification
000 - Computer science, information & general works
4
610 - Medicine & health
3
333 - Economics of land & energy
2
580 - Plants (Botany)
2
700 - The arts; fine & decorative arts
2
140 - Specific philosophical schools
1
330 - Economics
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
600 - Technology
1
630 - Agriculture & related technologies
1
658 - General management
1
900 - History & geography
1