Classification
000 - Computer science, information & general works
600 - Technology
6
720 - Architecture
800 - Literature & rhetoric
333 - Economics of land & energy
5
700 - The arts; fine & decorative arts
5
363 - Other social problems & services
4
380 - Commerce, communications & transportation
4
620 - Engineering & allied operations
4
900 - History & geography
4
330 - Economics
3
320 - Political science
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
657 - Accounting
1