Classification
301 - Sociology & anthropology
320 - Political science
330 - Economics
300 - Social sciences
3
100 - Philosophy & psychology
2
700 - The arts; fine & decorative arts
2
900 - History & geography
2
000 - Computer science, information & general works
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
600 - Technology
1
630 - Agriculture & related technologies
1