Long, N. H. (1934). Elementary method: Trombone or baritone. Rubank, Inc.
Tohutoru Kātū ChicagoLong, Newell H. Elementary Method: Trombone or Baritone. Chicago, IL: Rubank, Inc, 1934.
Tohutoro MLALong, Newell H. Elementary Method: Trombone or Baritone. Rubank, Inc, 1934.
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