Enger, Eldon D. <br/><br/>
Environmental science :  the study of interrelationships / 
Eldon D. Enger, Bradley F. Smith. 
 - 7th edition. 
 - Boston :  McGraw Hill,  c2000. 
 - xxi, 434 pages :  black and white illustrations ;  28 cm. 
<br/><br/> Includes appendix, glossary, and index. 
<br/><br/><label>ISBN: </label>0071183620 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.<br/>Environmental sciences.
<br/><br/><label>Dewey Class. No.: </label>CIR 628 En57 2000