TY  - BOOK
AU  - CLEMSON Wendy
AU  - CLEMSON David
TI  - Using maths : : journey to the moon / 
SN  - 9781846960598 (pbk) :
PY  - 2007///
CY  - Great Britain
PB  - Ticktock entertainment 
N2  - Over 50 maths puzzles that show how astronauts use maths every day
ER  -