Lownsborough, Roger. <br/><br/>
Electronic aids to navigation : radar and ARPA / 
Roger Lownsborough, David Calcutt. 
 - London :  Edward Arnold,  1993. 
 - 246p. 
<br/><br/><label>ISBN: </label>0340592583 (pbk) : 
<br/><br/><label>Subjects--Index Terms: </label>Navigation 
<br/><br/><label>LC Class. No.: </label>VK560 
<br/><br/><label>Dewey Class. No.: </label>623.8933