Classification
400 - Language
333 - Economics of land & energy
4
700 - The arts; fine & decorative arts
3
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
320 - Political science
1
330 - Economics
1
361 - Social problems & social welfare in general
1
370 - Education
1
520 - Astronomy & allied sciences
1
658 - General management
1
780 - Music
1
791 - Public performances
1
800 - Literature & rhetoric
1
900 - History & geography
1