Whetmore, Edward Jay. American electric : introduction to telecommunications and electronic media / Edward Jay Whetmore. - New York : McGraw-Hill, c1992. - x, 534 p. : ill. (some col.) ; 24 cm. - McGraw-Hill series in mass communication . Includes bibliographical references and index. ISBN: 0070699984 LCCN: 90049510 Subjects--Topical Terms: Broadcasting--United States. Dewey Class. No.: 384.540973/WHA