Mullins, Matt <br/><br/>
How does it fly?. Helicopter 
by Matt Mullins 
 - Ann Arbor, Michigan  Cherry Lake Publishing  2012 
 - 24 p.  col. ill.  21 cm. 
 - Community connections .
<br/><br/> includes bibliographical reference, index and glossary 
<br/><br/> Introduces helicopters, discusses how they fly, and shows different designs from Leonardo da Vinci's flying machine to the machines seen today. 
<br/><br/><label>ISBN: </label>9781610800655 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Helicopters -- Juvenile literature.<br/> Helicopters.
<br/><br/><label>Dewey Class. No.: </label>629.133352  / MUL