Classification
600 - Technology
700 - The arts; fine & decorative arts
610 - Medicine & health
3
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
612 - Human physiology
1
900 - History & geography
1