Classification
320 - Political science
3
330 - Economics
630 - Agriculture & related technologies
333 - Economics of land & energy
2
363 - Other social problems & services
2
140 - Specific philosophical schools
1
300 - Social sciences
1
340 - Law
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1