Roth coal permit, Healy River, Alaska : structural geology and topography. 1926.

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Roth coal permit, Healy River, Alaska : structural geology and topography. 1926.

1 map : ms. (blueprint copy) ; 57 x 116 cm.

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Patty, Ernest N. (Ernest Newton), 1894-1976

http://n2t.net/ark:/99166/w64t7ncs (person)