White i.d. <br/><br/>
Environmental systems :  an introductry text. 

 - ed. 
 - New york :  Chapman,  1984. 
 - 495  p. :  ill ;    cm. 
<br/><br/>index. 
<br/><br/><label>ISBN: </label> $ 
<br/><br/><label>Subjects--Topical Terms: </label><br/>environmental systems--geography.