Classification
333 - Economics of land & energy
2
370 - Education
700 - The arts; fine & decorative arts
720 - Architecture
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
363 - Other social problems & services
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
800 - Literature & rhetoric
1
900 - History & geography
1