Hardwick, Michael. <br/><br/>
The World's greatest air mysteries  / 
Michael Hardwick. 
 - Middlesex :  The Hamlyn Publishing Group Ltd,   1970 
 - 254 p. :  ill. ;   20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aircraft accidents.
<br/><br/><label>Dewey Class. No.: </label>629.1309