The barrel piano.
Ord-Hume, Arthur W. J. G.
The barrel piano. - p. 45-140.
in Player piano. The History of the mechanical piano and how to repair it, London, 1970
--Offprints
The barrel piano. - p. 45-140.
in Player piano. The History of the mechanical piano and how to repair it, London, 1970
--Offprints