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Geologic reconnaissance map of the southern part of Seward Peninsula / U.S. Geological Survey

by Geological Survey (U.S.)
Published 1907
“...Washington, D.C. : Geological Survey (U.S.)...”

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Geologic reconnaissance map of the northwestern part of Seward Peninsula / U.S. Geological Survey; topography by T.G. Gerdine, D.C. Witherspoon and Alfred H. Brooks

by Geological Survey (U.S.)
Published 1907
“...Washington, D.C. : Geological Survey (U.S.)...”

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Geologic map of southeastern Seward Peninsula, Alaska / U.S. Geological Survey; Alfred H. Brooks geologist in charge, topography by D.C. Witherspoon [et al]

by Geological Survey (U.S.)
Published 1911
“...Washington, D.C. : Geological Survey (U.S.)...”

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