Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
600 - Technology
620 - Engineering & allied operations
5
900 - History & geography
4
140 - Specific philosophical schools
2
700 - The arts; fine & decorative arts
2
330 - Economics
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
610 - Medicine & health
1
658 - General management
1
800 - Literature & rhetoric
1