Phosphate deposits in northern Alaska

[Open file report] ;

Open-file report (Geological Survey (U.S.)) ;

Geology of west-central Alaska

Open-file report ;

Open-file report (Geological Survey (U.S.)) ;

Phosphate deposits in northern Alaska

Trace elements investigations report,

Phosphate deposits in northern Alaska

Exploration of Naval Petroleum Reserve No. 4 and adjacent areas, Northern Alaska, 1944-53. Part 4, Regional studies.

Professional paper (Geological survey (U.S.)) ;

Geology of west-central Alaska [microform]

Open-file report ;

U.S. Geological Survey open-file report ;

Ophiolitic terrane of western Brooks Range, Alaska

Open-file report OF ;

Open-file report (Geological Survey (U.S.)) ;

Ophiolitic terrane of western Brooks Range, Alaska

Open-file report OF ;

U.S. Geological Survey open-file report ;

Aeromagnetic interpretation of the Medfra quadrangle, Alaska

Open-file report / Department of the Interior, United States Geological Survey ;

Open-file report (Geological Survey (U.S.)) ;

Geology of the Killik-Itkillik region, Alaska

Exploration of Naval Petroleum Reserve no. 4 and adjacent areas, northern Alaska, 1944-53, Part 3, Areal Geology

Geological Survey professional paper ;

Exploration of Naval Petroleum Reserve no. 4 and adjacent areas, northern Alaska, 1944-53, Part 3, Areal Geology.

Geology of the upper Killik-Itkillik region, Alaska

Geologic map of the Yukon-Koyukuk Basin, Alaska

Scientific investigations map ;

Petroleum possibilities of the Yukon-Koyukuk province, Alaska

Open-file report ;

Open-file report (Geological Survey (U.S.)) ;