Roddy, Dennis.  <br/><br/>
Electronic communications.  

 - 4th ed.  
 - Noida :    Pearson, Always Learning,   c2013.  
 - xi, 723 p. :   ill. ;   23 cm.  
<br/><br/><label>ISBN: </label>9788177585582 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Telecommunication. <br/>Communication. 
<br/><br/><label>Dewey Class. No.: </label>621.38   / 23