Classification
333 - Economics of land & energy
363 - Other social problems & services
2
500 - Natural sciences & mathematics
600 - Technology
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
800 - Literature & rhetoric
900 - History & geography
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
380 - Commerce, communications & transportation
1
580 - Plants (Botany)
1
720 - Architecture
1