Cunningham, William P. <br/><br/>
Environmental science:  A global concern/ 
By William P. Cunningham. 
 - Fourth edition. 
 - Bogota:  W.M.C Brown.  1997. 
 - 609 p.: 
<br/><br/><label>ISBN: </label>069728671 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>LC Class. No.: </label>GE 105  / CUN 1997