Turner L. B. Wireless telegraphy and telephony an outline for electrical engineers and others - New York Cambridge University Press 2013 - x, 195 p. : ill. ; 23 cm. Includes index. ISBN: 9781107629561 (pbk) Subjects--Topical Terms: Telegraph WirelessRadiotelephone--Thermionic valve circuits--Radio--Telegraph--Amplifier --Triodes--FEAS Dewey Class. No.: 621.3842 / TUR