Weller, James Marvin,  1899- <br/><br/>
Stratigraphic principles and practice / 
J. Marvin Weller 
 - New York :  Harper & Row,  1960 
 - 725 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic