Piece
See also FD 23/4794-4833
Catalogue reference: FD 23/5247
Date: 1978
See also FD 23/4794-4833
Piece
Catalogue reference: FD 23/1803
This record is about the Microphones: correspondence concerning electronic speech aid for the laryngectomised... dating from 1958-1963 in the series Medical Research Council: Registered Files, Scientific Matters (S Series). It is held at The National Archives, Kew.
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Microphones: correspondence concerning electronic speech aid for the laryngectomised person; leaflet from the Rand Development Corporation, Ohio
FD 23
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Medical Research Council: Registered Files, Scientific Matters (S Series)
Microphones: correspondence concerning electronic speech aid for the laryngectomised...
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