U.S. Dept. of the Interior, Geological Survey,
Metallic mineral resources map of the Ambler River quadrangle, Alaska [cartographic material]
Open-file map ;
Open-file report (Geological Survey (U.S.)) ;
Cobb, Edward Huntington, 1916-
Geological Survey (U.S.)
compiled by Edward H. Cobb.
Metallic mineral resources map of the Ambler River quadrangle, Alaska [cartographic material]