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scholarly article by Clyde Wahrhaftig published 1970 in Geologic Quadrangle

scholarly article by Clyde Wahrhaftig published 1970 in Geologic Quadrangle

scholarly article by Clyde Wahrhaftig published 1970 in Geologic Quadrangle

scholarly article by Clyde Wahrhaftig published 1970 in Geologic Quadrangle

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scholarly article by Clyde Wahrhaftig published in January 1958

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scholarly article by Clyde Wahrhaftig published 1968 in U.S. Geological Survey Bulletin

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scholarly article by Clyde Wahrhaftig et al published 1969 in U.S. Geological Survey Bulletin

scientific article published in 1960