Potter, Paul Edwin. <br/><br/>
Variance components of cross-bedding direction in some basal Pennsylvanian sandstones of the Eastern Interior Basin :  geological application / 
Paul Edwin Potter and Jerry S. Olson. 
 - (S.l. : s.n.),  0 
 - 50-73 p. :  ill. ;  26 cm. 
<br/><br/> Petikan gambarfoto daripada: The journal of Geology. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology.