Understanding data communications / written by George E. Friend ... [et al.] ; with contributions by Gerald Luecke, managing editor, Charles W. Battle, editor. - 2nd ed. / revised by Gilbert Held. - Indianapolis, Ind. : H.W. Sams, c1988. - iv, 291 p. : ill. ; 23 cm. - Sams understanding series .

Includes index.

Bibliography: p. 283.

ISBN: 0672272709 (pbk.) : 27.95

LCCN: 88060044

Subjects--Topical Terms:
Data transmission systems.

LC Class. No.: TK5105 / .U53 1988

Dewey Class. No.: 621.382