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