Jeffreys, Harold <br/><br/>
The earth :  its origin, history and physical constitution / 
Harold Jeffreys. 
 - 6. ed. 
 - Cambridge :  Cambridge University Press,  1976. 
 - xii, 574 p. 
<br/><br/><label>ISBN: </label>0521206480 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tierra
<br/><br/><label>LC Class. No.: </label>QE501