Jocelyn, Marthe <br/><br/>
The invisible enemy / 
by Marthe Jocelyn; illustrated by Abby Carter. 
 - New York, NY :  Dutton Children's Books,  2002. 
 - p.  cm. 
<br/><br/> Summary: Sixth-grader Billie finds her life complicated when a cute boy from Montreal transfers to her school and her enemy, Alyssa, accidentally uses her vanishing powder. 
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<br/><br/><label>ISBN: </label>0-525-46831-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Schools--Fiction<br/>Humorous stories<br/>Science--Experiments--Fiction