TY  - MUSIC
AU  - Marsteller,Robert L.
TI  - Basic routines:  : for trombone
PY  - 1974///
CY  - San Antonio (Texas)
PB  -  : Southern Music Company
KW  - Estudis i exercicis
KW  - Trombó
KW  - Partitures
N1  - Per a trombó
ER  -