Hughes, Larry, 1954- Introduction to data communications : a practical approach / Larry Hughes. - Sudbury, Mass. : Jones and Bartlett, 1997. - xv, 502 p. : ill. ; 24 cm. 1 computer disk (3 1/2 in.) Includes bibliographical references and index. ISBN: 0867207450 LCCN: 96013531 Subjects--Topical Terms: Data transmission systems LC Class. No.: TK5105 Dewey Class. No.: 004.6