511.7 <br/>
R 45 
                  The restless earth. 

 - New York.:  McGrawHill,  2000. 
 - 480p. -
<br/><br/> Товч хураангуй 
<br/><br/>                 <label>ISBN: </label>0022782354 
<br/><br/>                 <label>Түлхүүр үг: </label>earthquakes, volcanoes, earth changes,