Roddy, Dennis <br/><br/>
Electronic Communications 
by Dennis Roddy and John Coolen 
 - 4th ed. 
 - New Delhi:  Pearson Education Asia,  2003. 
 - ix, 820p. 
<br/><br/><label>ISBN: </label>8120309847 9788120309845 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic Communication
<br/><br/><label>Dewey Class. No.: </label>621.3822 ROD