Environmental science / 
Denis DuBay ...[et al.] 
 - 1st  ed. 
 - New York :  Scott Foresman,  1999. 
 - xii, 468  p. 
<br/><br/><label>ISBN: </label>0201321335 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.