Horowitz, Anthony. <br/><br/>
Groosham grange / 
by Anthony Horowitz. 
 - London :  Walker Books,  2003. 
 - 155 p. : ;  20 cm. 
 - Groosham Grange Series .
 - Groosham Grange Series .
<br/><br/><label>ISBN: </label>0744583446 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boarding school--Fiction.<br/>Humor--Fiction.