Classification
000 - Computer science, information & general works
140 - Specific philosophical schools
320 - Political science
330 - Economics
333 - Economics of land & energy
2
363 - Other social problems & services
370 - Education
380 - Commerce, communications & transportation
551 - Geology, hydrology & meteorology
2
700 - The arts; fine & decorative arts
2
414 - Phonology & phonetics
1
581 - Specific topics in natural history
1
600 - Technology
1
720 - Architecture
1
900 - History & geography
1