Classification
000 - Computer science, information & general works
1
301 - Sociology & anthropology
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
1
900 - History & geography
1