Classification
000 - Computer science, information & general works
333 - Economics of land & energy
2
370 - Education
2
500 - Natural sciences & mathematics
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
363 - Other social problems & services
1
530 - Physics
1
600 - Technology
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1
900 - History & geography
1