Shrader, Robert L. Electronic communication by Robert L. Shrader. - 4th ed. - New York McGraw-Hill Book Co. c1980. - xiv, 801 p. : ill. ; 25 cm. ISBN: 0070571503 Subjects--Topical Terms: Electronics.Radio.Telecommunication. Dewey Class. No.: Cir 621.38 Sh8 1980