What Makes the Grand Canyon Grand ? :  The World's Most Awe - Inspiriting Natural Wonders /  English 
Christian, Spencer | Felix, Antonia   
 - New York :  John Wiley &  Sons, INC ,  1998 
 - 116 p.:  25cm 
<br/><br/><label>ISBN: </label>9780471196174 
<br/><br/><label>Dewey Class. No.: </label>910  / CHR