Earth   Then and now Carla W Montgomery and David    

 - Ed 2 
 - Iowa  W C Browm          1994 
 - xv, 568p Bibliography chapterwise  cm. 
<br/><br/><label>ISBN: </label>0697136221 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H, N4