Ballard, Robert D. <br/><br/>
Exploring our living planet / 
by Robert D. Ballard  
 - Washington, D.C. :  National Geographic Society,  c1983. 
 - 366 p. :  col. ill.   29 cm. 
<br/><br/>Bibliography: p. 359. 
<br/><br/><label>ISBN: </label>0870444603 (deluxe) :;087044459X (hard) :;0870443976 (lib. bdg.) : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plate tectonics.;Planet
<br/><br/><label>Dewey Class. No.: </label>523.4  / BAL