Classification
000 - Computer science, information & general works
370 - Education
3
800 - Literature & rhetoric
140 - Specific philosophical schools
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
500 - Natural sciences & mathematics
2
600 - Technology
2
100 - Philosophy & psychology
1
400 - Language
1
530 - Physics
1
620 - Engineering & allied operations
1