Allen, M.A., and Butler, G.M., 1918, Manganese: Arizona Bureau of Mines Bulletin no. 91, 32 p. Authors Allen, M.A., and Butler, G.M. Publication Date 1918 Citation Arizona Bureau of Mines Bulletin no. 91, 32 p. State AZ Province BR County MA YA MO GM GN Placenames Big Horn Mts. Harcuvar Mts. Aguila Ridge Artillery Mts. Keywords Manganese Mining More Keywords Manganese, Mining, AzGeoBib RefNum 116
