Encyclopedia of inventions:  the how, why, where and when of everything you need to know about inventions / 
Louise Spilsbury. 
 - UK :  Parragon,   2007. 
 - 224 pages :  colored ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>9781407501727 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Invention-History-Encyclopediaa-Juvenile literature.
<br/><br/><label>Dewey Class. No.: </label>R603.21 S45