Classification
370 - Education
600 - Technology
4
700 - The arts; fine & decorative arts
4
720 - Architecture
000 - Computer science, information & general works
3
320 - Political science
3
330 - Economics
3
333 - Economics of land & energy
3
363 - Other social problems & services
3
380 - Commerce, communications & transportation
3
551 - Geology, hydrology & meteorology
3
610 - Medicine & health
3
900 - History & geography
2
140 - Specific philosophical schools
1
400 - Language
1