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1by Markewich, Helaine W.“...U.S. Geological Survey bulletin ;...”
Published 1994
Government Document Book -
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3by Marshall, R. B. (Robert Bradford), 1867-1949“...Geological Survey bulletin ;...”
Published 1911
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4by Hunter, Charles Eugene, 1911-“...Georgia. Geological Survey. Bulletin no. 47...”
Published 1941
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