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Keywords: SPEAKING
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Journal Articles
RECENT ENGINEERING DEVELOPMENTS IN THE GENERAL POST OFFICE. (INCLUDES PHOTOGRAPHS).
Available to Purchase
Journal of the Institution of Civil Engineers (1938) 8 (4): 3–30.
Published: 01 February 1938
...SIR G LEE © Thomas Telford and ICE 1938 GENERAL POST OFFICE GPO ULTRA HIGH ENGINEERING DEVELOPMENT POST OFFICE PROBLEMS TELEPHONES TRANSMISSION ALTERNATING CURRENTS TELEPHONY WIRE HIGH FREQUENCY RADIO COMMUNICATIONS CLOCKS SPEAKING ULTRA SHORT WAVE TELEGRAPHS...
