Understanding data communications. - Held, Gilbert, 1943- 4 0 16; Friend, George E.; 5 (Indianapolis, IN : Sams Pub., 1996)
Previous eds. written by George E. Friend ... et al.
Includes bibliographical references (p. [477]-478) and index.
Keywords: 2 -- 0; 6; Data transmission systems.;Computer networks. -- 20; 20; 2