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