Early discoveries /   Gerry Bailey. 

 - London :   Mercury, Junior.    2004   
 -  Crafty inventions   .
<br/><br/> Includes glossary and index <br/> 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>CIR 608.7 B152 2004