Nebel, Bernard J. <br/><br/>
Environmental science :  the way the world works / 
by Bernard J. Nebel, Richard T. Wright. 
 - 4th ed. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1993. 
 - xxi, 630 p. : ill. 
<br/><br/> Includes bibliographical references and index.  Contents : What ecosystems are and how they work--Finding a balance between population, soil, water, and agriculture. 
<br/><br/><label>ISBN: </label>0132854465 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental sciences.