TY  - MUSIC
AU  - Beethoven,Ludwig van
TI  - Three duets:  : for violin and cello or violin and viola
PY  - 0000///, [s.a.]
CY  - New York
PB  -  : International Music Company
KW  - Violí
KW  - Viola
KW  - Instruments de corda
KW  - Particel.les
N1  - Per a violí i viola
ER  -