Berenstain, Stan. <br/><br/>
The Berenstain bears fly-it! : up, up, and away / Stan & Jan Berenstain 

 - New York  Random House  1996 
 - 1 v. : ill. 
<br/><br/> Summary: After visiting the Hall of Flight at the Bearsonian Institution, the Bear cubs decide to invent their own airplanes.  Includes information about the history of flight and insturctions for making various balloon-powered aircraft. 
<br/><br/><label>ISBN: </label>0679973176 
<br/><br/><label>LCCN: </label>93032906 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paper airplanes--Juvenile fiction.<br/>Inventions--Juvenile fiction.<br/>Flight--Juvenile fiction.<br/>Bears--Juvenile fiction.