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1984
Albers, John P.. Geology and Chromite in the Low Plateau Area, Del Norte County, California In U. S. Geological Survey Bulletin. Vol. 1546-B. Department of the Interior, 1984.
1965
Albers, John P.. Economic Geology of the French Gulch Quadrangle, Shasta and Trinity Counties, California In Division of Mines and Geology Special Report. Vol. 85. California Department of Conservation, 1965.