Walker, Pam,  1958- <br/><br/>
Environmental science experiments / 
Pamela Walker, Elaine Wood. 
 - New York :  Facts on File,  2010. 
 - xviii, 153 p. :  ill. (chiefly col.) ;  29 cm. 
 - Facts on File science experiments. .
 - Facts on File science experiments. .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780816078059 (hbk.)  RM123.64 081607805X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences--Experiments--Juvenile literature.<br/>Science projects--Juvenile literature.