Moss, William Davies. <br/><br/>
Radar watchkeeping / 
W.D. Moss. 
 - Second edition. 
 - 126 pages :  illustrations ;  22 cm 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0540009644 (hardback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Radar in navigation
<br/><br/><label>Dewey Class. No.: </label>623.8933