981654
9781402707162
Readers can save the world from an army of deadly robots, but only by being smart & answering all the science puzzles offered in this volume. Learn about astronomy, nature, secret codes, medicine, chemistry & physics, by solving crosswords, riddles, word games, word searches & cyphers.Helene Hovanec is the author of 'The Incredible Science Puzzle Challenge', published 2003 under ISBN 9781402707162 and ISBN 1402707169.
[read more]