Classification
140 - Specific philosophical schools
300 - Social sciences
320 - Political science
2
330 - Economics
340 - Law
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
370 - Education
1
700 - The arts; fine & decorative arts
1