Classification
000 - Computer science, information & general works
320 - Political science
370 - Education
380 - Commerce, communications & transportation
610 - Medicine & health
600 - Technology
4
700 - The arts; fine & decorative arts
4
330 - Economics
2
333 - Economics of land & energy
2
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
170 - Ethics
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
400 - Language
1
581 - Specific topics in natural history
1
658 - General management
1
720 - Architecture
1