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1by University of Texas at Austin. Bureau of Economic Geology., McGowen, J. H., Macon, J. W. cart.
Published 1976cartographic bibliotecaUNCO AR -
2by University of Texas at Austin. Bureau of Economic Geology. 49837, McGowen, J. H. 31844, Macon, J.W. cart. 55522
Published 1976cartographic bibliotecaUNCO AR -
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