Enger, Eldon D. <br/><br/>
Environmental Science :  a study of interrelationships / 
Eldon D. Enger, Bradley F. Smith 
 - 13th ed. 
 - New York :  McGraw-Hill,  2013 
 - xxv, 485 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780071318150 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences