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1Published 1937Subjects: “...University of Texas at Austin. Bureau of Economic Geology....”
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7Published 1991Government Document Microform Book
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13Published 1969Subjects: “...University of Texas at Austin. Bureau of Economic Geology....”
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16by Collins, Edward W.“...Miscellaneous map (University of Texas at Austin. Bureau of Economic Geology) ;...”
Published 2000
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17by Collins, Edward W.“...Miscellaneous map (University of Texas at Austin. Bureau of Economic Geology) ;...”
Published 2002
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