Understanding data communications /

Held, Gilbert,

Understanding data communications / Gilbert Held. - 7th ed. - Boston : Addison; 2002. - xviii, 765 p. : ill. ; 24 cm.

Previous eds. written by George E. Friend ... et al.

8176353191 0672322161

99060971


Data transmission systems.
Computer networks.

004.6 / H4743