Kennedy, George, 1937-. Electronic communication systems / George Kennedy, Bernard Davis. - 4th ed. - Lake Forest, Ill. : Glencoe, c1993. - xv, 763 pages : illustrations ; 25 cm. Includes index. ISBN: 0028005929 (hard cover) LCCN: 92003906 Subjects--Topical Terms: Telecommunication. LC Class. No.: TK5101 / .K39 1993 Dewey Class. No.: 621.382