Classification
100 - Philosophy & psychology
000 - Computer science, information & general works
4
170 - Ethics
3
320 - Political science
3
380 - Commerce, communications & transportation
3
120 - Epistemology, causation & humankind
2
333 - Economics of land & energy
2
340 - Law
2
363 - Other social problems & services
2
700 - The arts; fine & decorative arts
2
200 - Religion
1
300 - Social sciences
1
370 - Education
1
400 - Language
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
620 - Engineering & allied operations
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1
900 - History & geography
1