Roddy Dennis <br/><br/>
Electronic communication 

 - 3 
 - New Delhi       Prentice-Hall          1987 
 - 788p.  cm. 
<br/><br/><label>Standard No.: </label>31021 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65,4, M7;4