Classification
333 - Economics of land & energy
700 - The arts; fine & decorative arts
720 - Architecture
000 - Computer science, information & general works
3
380 - Commerce, communications & transportation
3
600 - Technology
3
363 - Other social problems & services
2
580 - Plants (Botany)
2
620 - Engineering & allied operations
2
900 - History & geography
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
320 - Political science
1
330 - Economics
1
370 - Education
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
800 - Literature & rhetoric
1