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Questions and Answers Inventions: How? Why? Where? When?
Questions and Answers Inventions How Why Where When Author:Louise Spilsbury In this book you'll find the answers to hundreds of fascinationg questions about inventions.
* - Over 340 fascinating questions and answers
* - Dates for key inventions at a glance
* - Index of famous inventors
* - Over 200 photographs
* - More than 250 illustrations, cutaway diagrams and cartoons