Think factory: amazing inventions 
Melvin and Gilda Berger 
 - New York  Scholastic  2006 
 - 47 p. : col. ill 
<br/><br/><label>ISBN: </label>9780439519137 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invention & patents
<br/><br/><label>Dewey Class. No.: </label>608 MEL