Classification
361 - Social problems & social welfare in general
700 - The arts; fine & decorative arts
330 - Economics
3
610 - Medicine & health
3
900 - History & geography
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
400 - Language
1
540 - Chemistry & allied sciences
1
620 - Engineering & allied operations
1
791 - Public performances
1
800 - Literature & rhetoric
1