Hickman, Graham C. <br/><br/>
The ecology action guide / 
Graham C. Hickman & Susan M. Hickman 
 - San Francisco :  Benjamin Cummings ,  2002. 
 - vii, 68 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0321068831 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology