Dorr, J.V.N., 1969, Manganese, in Mineral and water resources of Arizona: Arizona Bureau of Mines Bulletin 180, p. 211-225.
Dorr, J.V.N., 1969, Manganese, in Mineral and water resources of Arizona: Arizona Bureau of Mines Bulletin 180, p. 211-225.
Mineral District, Manganese, Production,