Atwater, Mary <br/><br/>Earth's Riches  -- New York:  Macmillan/McGraw-Hill School Publishing Company,  1993. <br/><br/> Includes index. <br/><br/><label>ISBN: </label>0022742794 <br/><br/><label>Dewey Class. No.: </label>GS Cir 500 T11 1993