Downing J J <br/><br/>
Modulation system and noise 
Downing J J 
 -  1964 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>35791 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D65:B28, K4-;1