POSKITT Kjartan <br/><br/>
Murderous maths :  guaranteed to bend your brain/ 
Kjartan Poskitt 
 - London :  Scholastic Children's Books,  2008 
 - 144 p. :  ill. 
<br/><br/><label>ISBN: </label>9781407105888 (pbk) :  16.90 BND