Classification
140 - Specific philosophical schools
304 - Factors affecting social behavior
330 - Economics
2
610 - Medicine & health
630 - Agriculture & related technologies
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
320 - Political science
1
333 - Economics of land & energy
1
340 - Law
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
581 - Specific topics in natural history
1