Ballard, Robert D <br/><br/>
Exploring our living planet 

 - Washington, D.C.  National Geographic  1988 
 - 366 p. 
<br/><br/> D., 8/01 
<br/><br/><label>ISBN: </label>0-87044-762-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plate tectonics