Schaufele, Christopher   <br/><br/>
Earth Algebra: college algebra with applications to environment issues / 
Christopher Schaufele and Nancy Zumoff. 
 - New York:  Harper collins college publishers,  1993. 
 - 364p;25cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0065008871 
<br/><br/><label>Dewey Class. No.: </label>363.7387 SCH