Barker, Fred
Gold Investigations in Precambrian Clastic and pelitic Rocks, Southwestern Colorado and Northern New Mexico / By Fred Barker. -- Washington : United States Government Printing Office, 1969 - 22 p. -- (Geological Survey Bulletin ; 1272-F).
Nuevo Mexico
Precambrico
Rocas
552.2(789)
Gold Investigations in Precambrian Clastic and pelitic Rocks, Southwestern Colorado and Northern New Mexico / By Fred Barker. -- Washington : United States Government Printing Office, 1969 - 22 p. -- (Geological Survey Bulletin ; 1272-F).
Nuevo Mexico
Precambrico
Rocas
552.2(789)