Shrock, Robert R. <br/><br/>
Sequence in layered rocks :  a study of features and structures useful for determining top and bottom or order of sucession in bidded and tabular rock bodies / 
Robert R. Shrock. 
 - London :  McGraw-Hill,  c 1948. 
 - xiii, 507  p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>333  333 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gology--Field work.
<br/><br/><label>Dewey Class. No.: </label>552 / S87s