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Rystrom, V.L., Finn, C.A., and King, T.V.V., 2002, Geologic interpretation of aeromagnetic maps in the Santa Cruz Basin-Patagonia Mountains area, south-central Arizona: U.S. Geological Survey Open-File Report 02-0100 [available only online: http://geopubs.wr.usgs.gov/open-file/of02-100].

Phillips, J.D., 2002, Processing and interpretation of aeromagnetic data for the Santa Cruz Basin-Patagonia Mountains area, south-central Arizona: U.S. Geological Survey Open-File Report 02-0098 [available only online: http://geopubs.wr.usgs.gov/open-file/of02-98].

Gettings, M.E., 2002, An interpretation of the 1996 aeromagnetic data for the Santa Cruz basin, Tumacacori Mountains, Santa Rita Mountains, and Patagonia Mountains, south-central Arizona: U.S. Geological Survey Open-File Report 02-0099 [available only online: http://geopubs.wr.usgs.gov/open-file/of02-99/].

Kennard, Michele, Johnson, A.E., and Perry, T.W., 1988, Preliminary report on the hydrology of Cienega Creek Groundwater Basin: Arizona Department of Water Resources, Division of Hydrology, Special Studies, 11 p.

E.L. Montgomery and Associates, 1985, Water adequacy report: Stage one development, Empirita Ranch area, Pima County, Arizona: Arizona Department of Water Resources, contractor report, 48 p.

Soil Conservation Service, Economic Research Service, Forest Service, and Arizona Water Commission, 1977, Santa Cruz-San Pedro River basin, Arizona: Resource inventory: U.S. Department of Agriculture Soil Conservation Service, [350] p.

Turner, S.F., and others, 1943, Ground-water resources of the Santa Cruz Basin, Arizona: U.S. Geological Survey Open-File Report [unnumbered], Tucson, Ariz., May 14, 1943, [89] p., 3 sheets, scales 1:23,000, 1:200,000, and 1:500,000.

Ben-Asher, J., Randall, J., and Resnick, S., 1976, Determining areal precipitation in the Basin and Range province of southern Arizona - Sonoita Creek Basin, in Chery, D.L., Jr., ed., Hydrology and water resources in Arizona and the Southwest, V. 6: American Water Resources Association, Arizona Section, and Arizona Academy of Science, Hydrology Section, Annual Meeting, Tucson, Ariz., 1976, Proceedings, p. 161-167.

Gellenbeck, D.J., and Anning, D.W., 2002, Occurrence and distribution of pesticides and volatile organic compounds in ground water and surface water in central Arizona basins, 1996-98, and their relation to land use: U.S. Geological Survey Water-Resources Investigations Report 01-4144, 107 p.