Dungan, Frank R., <br/><br/>
Electronic communications systems / 

 - Boston, Mass.  Breton Publishers,  1987. 
 - xiv, 626 p. :  ill. ;  25 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>053407698X 
<br/><br/><label>LC Class. No.: </label>TK5101  / .D91 1987