Dunbar, C.O, Rodgers, J <br/><br/>
Principles of stratigraphy 
Carl O. Dunbar, John Rodgers 
 - New york  John wiley  1957 
 - xii, 356p,:  Pbk.; 
<br/><br/><label>ISBN: </label>97804122508 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stratigraphy