Classification
333 - Economics of land & energy
10
700 - The arts; fine & decorative arts
10
600 - Technology
9
380 - Commerce, communications & transportation
6
620 - Engineering & allied operations
6
900 - History & geography
6
330 - Economics
5
000 - Computer science, information & general works
2
363 - Other social problems & services
2
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
720 - Architecture
1