What's the big idea? : inventions that changed life on earth forever /

This book shares the big ideas behind more than thirty of the world's greatest innovations.

Bibliographic Details

Main Author:	Becker, Helaine
Other Authors:	Attoe, Steve
Format:	Book
Language:	English
Published:	Toronto : Maple Tree Press, [2009]
Subjects:	Inventions > Juvenile literature.