Madgwick, Wendy  <br/><br/>
Inventions /  
Wendy Madgwick. 
 - New York :  Scholastic,    2001. 
 - 40 p. :  ill. ;  27 cm. 
 - Questions and answers  .
<br/><br/><label>ISBN: </label>0-439-35579-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference books
<br/><br/><label>Subjects--Index Terms: </label>Questions and answers