Radio transmitters /
Gray, Laurence.
Radio transmitters / Laurence Gray, Richard Graham. - New York : McGraw-Hill, 1961. - xi, 462 p. : ill.
Radio--Transmitters and transmission.
Radio transmitters / Laurence Gray, Richard Graham. - New York : McGraw-Hill, 1961. - xi, 462 p. : ill.
Radio--Transmitters and transmission.