Friend, George E. <br/><br/>
Understanding data communications / 
George E. Friend 
 - Dallas :  Texas Instruments,  c1984. 
 - iv,268 p. :  ill. ;  23 cm. 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>Data communication Computer communication Data communication<br/>Business Business<br/>Data communication
<br/><br/><label>LC Class. No.: </label>TK5105  / .U53 1984 
<br/><br/><label>Dewey Class. No.: </label>621.38220