Classification
333 - Economics of land & energy
5
610 - Medicine & health
4
600 - Technology
3
700 - The arts; fine & decorative arts
3
000 - Computer science, information & general works
2
576 - Genetics & evolution
2
620 - Engineering & allied operations
2
900 - History & geography
2
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
530 - Physics
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
650 - Management & auxiliary services
1