Drew, J. (1964). Sigmund Hering Forty Progresive Etudes for Trombone. CARL FISCHER.
Chicago-čujuhus (17. p.)Drew, John. Sigmund Hering Forty Progresive Etudes for Trombone. CARL FISCHER, 1964.
MLA-čujuhus (9. p.)Drew, John. Sigmund Hering Forty Progresive Etudes for Trombone. CARL FISCHER, 1964.
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