Copper deposits of part of the Helvetia mining district, Pima County, Arizona
Creasey, S.C., and Quick, G.L., 1955, Copper deposits of part of the Helvetia mining district, Pima County, Arizona: U.S. Geological Survey Bulletin 1027-F, p. 301-323, 4 plates.
Authors
Creasey, S.C., and Quick, G.L.
Publication Date
1955
Citation
U.S. Geological Survey Bulletin 1027-F, p. 301-323, 4 plates.
