Levin, Harold L.  1929- <br/><br/>
The earth through time / 
Harold L. Levin 
 - Philadelphia :  W. B. Saunders,  1978 
 - 597 p. :  ill. ;  27 cm. 
<br/><br/>Includes indexes 
<br/><br/><label>ISBN: </label>0721657354 
<br/><br/><label>LCCN: </label>77-078573 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Historical geology