The principles of sound signalling
By: by Morris D. Hart, and W. Whately Smith.
Contributors: Smith, W. Whately 1892-1947, joint author.
Publisher: Constables and company ltd.
Published: 1925
Place of publication: London
Language: eng
Number of pages: 139
Subjects: Sound.; Sound -- Equipment and supplies.; Signals and signaling.
Other titles: Sound signalling.