Blake Roy.  <br/><br/>
Electronic communications systems 

 - 2nd edition. 
 - Canada :  Canada Cengage Learning   2010. 
 - 748.  
<br/><br/><label>ISBN: </label>978-81-315-0307-2  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering,
<br/><br/><label>Dewey Class. No.: </label>621.382  / BLA