Dunbar, Carl Owen,  1891- <br/><br/>
Historical geology / 
by Carl O. Dunbar 
 - 2nd ed. 
 - New York :  John Wiley & Sons,  1960 
 - 500 p. :  ill. ;  27 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>LCCN: </label>60-005598 /L 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Historical geology