Rubank intermediate method : trombone or baritone - Skornicka, Joseph Edward 1902-1972; Boltz, E. G. (Miami, Fla. : Rubank, Inc., 1938)
"A follow up course for individual or like-instrument class instruction"
Keywords: TROMBON -- EDUCACION Y ESTUDIO; BARITONO (INSTRUMENTO MUSICAL) -- EDUCACION Y ESTUDIO