Bradbrooke, Joan. <br/><br/>
The world's helicopters /  Joan Bradbrooke 

 - London :  The Bodley Head,  1972. 
 - 111 p. :  ill. 
<br/><br/><label>ISBN: </label>0370108329 
<br/><br/><label>LCCN: </label>44041095  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Helicopters--Models<br/>Helicopters--Juvenile literature