Classification
363 - Other social problems & services
551 - Geology, hydrology & meteorology
700 - The arts; fine & decorative arts
720 - Architecture
320 - Political science
5
333 - Economics of land & energy
5
380 - Commerce, communications & transportation
4
330 - Economics
3
370 - Education
3
600 - Technology
3
610 - Medicine & health
3
900 - History & geography
3
000 - Computer science, information & general works
2
140 - Specific philosophical schools
1
340 - Law
1