Understanding earth 
Frank Press...et-al 
 - 4th ed. 
 - New York:  W.H. Feeman and Company,  2004. 
 -  Various pages 
<br/><br/> Includes bibliographical references and index 
<br/><br/><br/>Eng 
<br/><br/><label>ISBN: </label>0-7167-9617-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences
<br/><br/><label>Dewey Class. No.: </label>550  / UND