hearing aid
Subtitle: a history of stereophonic sound
By: written by Edward  Greenfield ; introduced by Sir Adrian Boult; produced by Richard Keen;  to be broadcast in the Experimental Stereo Service of the BBC on 3rd  October 1964.
Contributors: British Broadcasting Corporation.
Series: Italia prize 1964 BBC entry
Publisher: BBC
Published: 1964
Place of publication: London
Language: mul
Notes: Parallel text in French and English.