CHAPMAN Ernest Hall, Radio. The Mouth of the 20th Century.

Radio. Mouth of the 20th Century.

Translated and supplemented with a chapter "Radio in Poland" by Manswet Domanski. With 24 plates and 33 drawings. Warsaw (1939). Nakł. Trzaska, Evert and Michalski. 8, pp. 158, [5], illustrations in the text and on separate plates, cloth binding, wraps. Library of Today's Day. Vol. 3.
Unw. abrasions of the wrapper. Traces of yellowing of k. tit. Good condition. Includes, among others: Origins of the spark telephone; Aladdin's radio lamp; Ancient receivers, detection and response; British Empire broadcasting; Use of radio for navigation and direction finding; Television.