Classification
330 - Economics
361 - Social problems & social welfare in general
700 - The arts; fine & decorative arts
5
300 - Social sciences
3
610 - Medicine & health
3
630 - Agriculture & related technologies
3
000 - Computer science, information & general works
2
304 - Factors affecting social behavior
2
320 - Political science
2
333 - Economics of land & energy
2
140 - Specific philosophical schools
1
340 - Law
1
363 - Other social problems & services
1
370 - Education
1
380 - Commerce, communications & transportation
1
540 - Chemistry & allied sciences
1
576 - Genetics & evolution
1
620 - Engineering & allied operations
1
791 - Public performances
1
900 - History & geography
1