Kennedy, George. <br/><br/>
Electronic communication systems  
George Kennedy. 
 - 4th. ed. 
 - Islamabad  National Book Foundation  1993. 
 - 763 p. 
<br/><br/> Electronic Communication Systems by George Kennedy (Dec 1992) 
<br/><br/><label>ISBN: </label>0028005929 (hardcover)  $95.44 9780028005928 (hardcover) 
<br/><br/><label>Source: </label> 295.00 PKR