Duffey, Betsy. <br/><br/>
The gadget war / 
by Betsy Duffey ; illustrated by Janet Wilson. 
 - New York, NY, USA :  Puffin Books,  1991. 
 - 74 p. ;  20 cm. 
<br/><br/> School becomes a battleground when an instant rivalry develops between two third graders determined to prove who is the best inventor. 
<br/><br/><label>ISBN: </label>0-14-034871-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventors--Fiction<br/>Competition (Psychology)<br/>Schools--Fiction