Freeman, Mae. <br/><br/>
When air moves / 
[by] Mae Freeman. 
 - New York :  McGraw,  1968. 
 - 44 p. :  ill. 
<br/><br/> Discusses the invisible but real world of air whose volume fills tires and bags and whose force lifts planes, trains, and boats. 
<br/><br/><label>LCCN: </label>68016486 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aerodynamics.<br/>Air.
<br/><br/><label>Dewey Class. No.: </label>533.6