Classification
170 - Ethics
780 - Music
700 - The arts; fine & decorative arts
5
900 - History & geography
5
100 - Philosophy & psychology
4
791 - Public performances
3
140 - Specific philosophical schools
2
200 - Religion
2
320 - Political science
1
363 - Other social problems & services
1
398 - Folklore
1
400 - Language
1
610 - Medicine & health
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1