Classification
363 - Other social problems & services
3
800 - Literature & rhetoric
160 - Logic
1
330 - Economics
1
333 - Economics of land & energy
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
620 - Engineering & allied operations
1
658 - General management
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1