Stamper, David A. Essentials of data communications / David A. Stamper and the Saratoga Group. - Menlo Park, Calif. : Benjamin/Cummings, c1997. - xviii, 366 p. : ill. ; 25 cm. + 1 computer disk (3 1/2 in.) Includes index. ISBN: 0805377360 LCCN: 96012818 Subjects--Topical Terms: Data transmission systems.Computer networks. LC Class. No.: TK5105 / .S735 1997 Dewey Class. No.: 004.6