Investigation of Twin Buttes copper mines, Pima County, Ariz.
Cummings, J.B., and Romslo, T.M., 1950, Investigation of Twin Buttes copper mines, Pima County, Ariz.: U.S. Bureau of Mines Report of Investigations R.I. 4732, 32 p.
Authors
Cummings, J.B., and Romslo, T.M.
Publication Date
1950
Citation
U.S. Bureau of Mines Report of Investigations R.I. 4732, 32 p.
