Materia
M Music
NX Arts in general
58
MT Musical instruction and study
8
LB2300 Higher Education
6
ML Literature of music
6
GR Folklore
4
L Education (General)
4
LC Special aspects of education
4
CT Biography
3
H Social Sciences (General)
3
D History (General)
2
HM Sociology
1
LB1603 Secondary Education. High schools
1
N Visual arts (General) For photography, see TR
1
PN Literature (General)
1