Poskitt, Kjartan. Guaranteed to bend your brain / Kjartan Poskitt ; illustrated by Trevor Dunton. - New ed. - London : Scholastic, 2008. - 144 p. : ill. ; 20 cm. - Murderous maths . Originally published as Murderous maths: 1997. ISBN: 9781407105888 LCCN: 2015458861 Nat. Bib. No.: GBA864049 bnb Nat. Bib. Agency Control No.: 014607513 Uk Subjects--Topical Terms: Mathematics LC Class. No.: QA99 / .P6695 2008 Dewey Class. No.: 510