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Current document root: Journal of the Society of Motion Picture Engineers ( Volume: 22, Issue: 4, April 1934)

The “Selenophon” Sound Recording and Reproducing System

SMPTE • Journal Article • [Active]

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  • 1 von Schrott P. : “The Selenophon Sound Recording System,” J. Soc. Mot. Pict. Eng. , XVIII (May, 1932 ), No. 5 , p. 622 .EXTERNAL