Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska
Geological Survey bulletin ;
Investigations of Alaskan volcanoes
Investigations of Alaskan volcanoes.
Coats, Robert R. (Robert Roy), 1910-1995, author.
Geological Survey (U.S.), issuing body.
United States. Army. Corps of Engineers, sponsoring body.
Robert R. Coats.
Geologic reconnaissance of Semisopochnoi Island, western Aleutian Islands, Alaska