Classification
363 - Other social problems & services
320 - Political science
4
330 - Economics
4
610 - Medicine & health
4
333 - Economics of land & energy
3
700 - The arts; fine & decorative arts
3
100 - Philosophy & psychology
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
300 - Social sciences
1
301 - Sociology & anthropology
1
370 - Education
1
540 - Chemistry & allied sciences
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1