Classification
000 - Computer science, information & general works
3
333 - Economics of land & energy
3
600 - Technology
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
500 - Natural sciences & mathematics
2
330 - Economics
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
650 - Management & auxiliary services
1
720 - Architecture
1