Light ,Sound and waves <br/><br/>
Light, sound , and waves : science fair projects 

 - USA  Enslow Publishers  2010 
 - 160 pages  col.ill.  24 cm 
<br/><br/><label>ISBN: </label>9780766034167" 
<br/><br/><label>Nat. Bib. No.: </label>
<br/><br/><label>Dewey Class. No.: </label>J 507.8 GARD