Enger, Eldon D. <br/><br/>
Environmental science :  a study of interrelationships / 
Eldon D. Enger, Bradley F. Smith. 
 - Seventh Edition. 
 - xxi, 434 p. :  ill. , maps ;  28 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9780071183628 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.