Classification
330 - Economics
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
540 - Chemistry & allied sciences
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
363 - Other social problems & services
1
530 - Physics
1
580 - Plants (Botany)
1
600 - Technology
1
620 - Engineering & allied operations
1
658 - General management
1