Stanley, William D. Electronic communications : principles and systems / William D. Stanley, John M. Jeffords. - Clifton Park, NY : Thomson Delmar Learning, c2006. - xviii, 702 p. : ill. ; 29 cm. + 1 CD-ROM (4 3/4 in.) Includes index. ISBN: 1418000035 (alk. paper) LCCN: 2005019390 Subjects--Topical Terms: Telecommunication.Digital communications. LC Class. No.: TK5101 / .S6594 2006 Dewey Class. No.: 621.382