Preliminary stratigraphic cross section showing radioactive zones in the Devonian black shales of the central part of the Appalachian basin

1977 ◽  
Author(s):  
John B. Roen ◽  
L.G. Wallace ◽  
Wallace De Witt
1996 ◽  
Vol 24 (2) ◽  
pp. 243-249 ◽  
Author(s):  
Karen Rose Cercone ◽  
David Deming ◽  
Henry N. Pollack

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