Understanding data communications /

Held, Gilbert, 1943-

Understanding data communications / Gilbert Held. - 7th ed. - Boston : New Delhi : Addison-Wesley, ; Pearson Education, c2002.[Reprinted] - xv, 765 p. : ill. ; 23 cm.

Includes bibliographical references and index.

0672322161 (alk. paper) 9788131708729

2001089583

004.6