Classification
330 - Economics
580 - Plants (Botany)
620 - Engineering & allied operations
800 - Literature & rhetoric
600 - Technology
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
320 - Political science
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
658 - General management
1