Classification
300 - Social sciences
320 - Political science
600 - Technology
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
330 - Economics
1
333 - Economics of land & energy
1
370 - Education
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1