Bonnet, Robert L. <br/><br/>
Environmental science :  49 science fair projects / 
Robert L. Bonnet, G. Daniel Keen. 
 - Blue Ridge Summit, PA :  TAB Books,  c1990. 
 - xv, 124 pages. : illustrations. 
 - Science fair projects series .
<br/><br/> Includes glossary and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pollution--Experiments--Juvenile literature<br/>Ecology--Experiments--Juvenile literature<br/>Science projects--Juvenile literature