Poskitt, Kjartan, <br/><br/>
The Phantom X / 
Kjartan Poskitt ; illustrated by Philip Reeve. 
 - London :  Scholastic,  2009. 
 - 160 pages :  illustrations ;  20 cm. 
 - Murderous maths .
<br/><br/><label>ISBN: </label>9781407107134 (pbk.) 1407107135 (pbk.) 
<br/><br/><label>LCCN: </label>2015458862 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Algebra--Humor--Juvenile literature.<br/>Mathematics--Juvenile humor.<br/>Mathematics--Miscellanea--Juvenile literature.<br/>Mathematical recreations.
<br/><br/><label>LC Class. No.: </label>MLCS 2017/47721 (Q)