Classification
000 - Computer science, information & general works
2
330 - Economics
2
333 - Economics of land & energy
2
363 - Other social problems & services
600 - Technology
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
657 - Accounting
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1
800 - Literature & rhetoric
1
900 - History & geography
1