Couch leon W. II. <br/><br/>
Digital  and analog communication systems / 

 - Macmillan Publishing,  Macmillan Publishing,  c1993 
 - 827 p,;  NA  24cm. 
<br/><br/><label>ISBN: </label>0023252812 
<br/><br/><label>LC Class. No.: </label>D448 
<br/><br/><label>Dewey Class. No.: </label>621.38221  / COU