Montgomery, Carla W.,  1951- <br/><br/>
Earth, then and now / 
Carla W. Montgomery, David Dathe. 
 - 3rd ed. 
 - Boston :  McGraw Hill,  1997 
 - xvi, 596 p. :  ill. (some col.), col. maps ;  28 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0697282813  RM207.03 
<br/><br/><label>LCCN: </label>96-083506 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology<br/>Historical geology