Kay, Marshall,  1904-1975 <br/><br/>
Stratigraphy and life history / 
Marshall Kay, Edwin H. Colbert 
 - New York :  Wiley,  1965 
 - 736 p. :  ill. ;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--North America<br/>Geology, Stratigraphic