Environmental sciences :  a student's companion / 
K.J. Gregory ... [et al.] 
 - Los Angeles :  SAGE,  c2009. 
 - xiv, 441 p. :  ill. ;  24 cm. 
<br/><br/> Includes Index. 
<br/><br/>Includes bibliographical references . 
<br/><br/><label>ISBN: </label>9781412947053 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.