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GEOLOGIC MAP OF THE UGASHIK, BRISTOL BAY, AND WESTERN PART OF KARLUK QUADRANGLE, ALASKA
Detterman, R. L., Case, J. E., Wilson, F. H., and Yount, M. E., 1987, Geologic map of the Ugashik, Bristol Bay, and western part of Karluk quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I 1685, unpaged, 1 plate, scale 1:250,000. link on DGGS website to PDF of the map