Norriss, Andrew. <br/><br/>
The portal / 
by Andrew Norriss. 
 - London :  Puffin,  2007. 
 - 213 p ;  20 cm. 
<br/><br/><label>ISBN: </label>9780141321585 (pbk.) : £4.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Brothers--Juvenile fiction.<br/>Science fiction.