Grabau, Amadeus W. <br/><br/>
Principles of stratigraphy 
by Amadeus W. Grabu; with prefatory note by Marshall Kay 
 - New ed. 
 - New York  Dover Publications  1960 
 - 2 v.  ill.  21 cm 
<br/><br/>Includes bibliographical references 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic