Nesbø, Jo <br/><br/>
Doctor Proctor's fart powder  

 - New York :  Aladdin,   2010 
 - 265 p. :  ill.;  22 cm 
<br/><br/> New friends Nilly and Lisa help eccentric professor Doctor Proctor to develop his latest invention, a powder that makes one fart, making them very popular at school, but someone is planning to steal the industrial-strength formula for evil purposes. 
<br/><br/><label>ISBN: </label>9781416979722 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inventor--Fiction<br/>Eccentrics and eccentricities--Fiction<br/>Flatulence--Fiction<br/>Friendship--Fiction<br/>Humorous stories