Arkell, Basil <br/><br/>
Helicopters work like this / 
Basil Arkell and John W. R. Taylor ; illustrated by Frederick G. Cook 
 - London :  Phoenix House,  1959 
 - 62 p. :  ill. ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Helicopters--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>629.133