U.S. Bureau of Mines, 1933-88, Minerals Yearbook [annual volumes for the years 1932-86]: Washington, D.C., U.S. Government Printing Office.
U.S. Bureau of Mines
Washington, D.C., U.S. Government Printing Office.
Mineral District, Production, Copper, Lead, Zinc, Gold, Silver, Molybdenum, Manganese, Tungsten,
