Burger, W. <br/><br/>
Radar Observer's Handbook for Merchant Navy Officers 

 - 7th Ed. 
 -  Brown, Son and Ferguson, Ltd.  1983 
 - xiii, 467 
<br/><br/><label>ISBN: </label>0851744435, 
<br/><br/><label>Dewey Class. No.: </label>Column-42