Harbaugh, John W. <br/><br/>
Stratigraphy and the Geologic Time Scale 

 - 2 
 - Lowa  WM.C.Brown Company Publishers  1968 
 - 136 
<br/><br/><label>ISBN: </label>0697050114 
<br/><br/><label>Publisher. No.: </label> Bangalore Book Buereau 
<br/><br/><label>Subjects--Personal Names: </label> Geology 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology