Barker, Forrest L. Communications electronics : Systems, circuits, and devices / Forrest Barker. - Englewood Cliffs, N.J. : Prentice-Hall, 1987. - xii, 676 p. : ill. ; 25 cm. Includes index. Bibliogr.: p. 647-648. ISBN: 0131538837 Subjects--Topical Terms: Telecommunication Dewey Class. No.: 621.38