Lemon, Roy R. <br/><br/>
Principles of stratigraphy 
/ Roy R. Lemon 
 - Columbus  Merrill Publishing Company  1990 
 - xii, 559 p. : ill. ; 25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0675205379 
<br/><br/><label>LCCN: </label>89-062283 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic