Koll, Hilary. Climb Everest / by Hilary Koll, Steve Mills and Russell Brice. - Tunbridge Wells : Ticktock, 2006. - 32 p. : ill ; 28 cm. - Using maths . - Using maths . ISBN: 1860079873 Subjects--Topical Terms: Mathematics--Problems, exercises, etc.--Juvenile literature.Mountaineering--Mathematics--Juvenile literature.