Powers of nature / 
prepared by the Special Publications Division, National Geographic Society 
 - Washington :  Society,  c1978 
 - 199 p. :  col. ill. ;  26 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> PND 8.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earthquakes<br/>Volcanoes<br/>Meteorology<br/>Droughts<br/>Water
<br/><br/><label>Dewey Class. No.: </label>551