Classification
330 - Economics
2
333 - Economics of land & energy
2
600 - Technology
2
658 - General management
700 - The arts; fine & decorative arts
2
800 - Literature & rhetoric
160 - Logic
1
363 - Other social problems & services
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
900 - History & geography
1