Hartman, G.W., 1973, General soil map, with soil interpretations for land use planning, Maricopa County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 49 p., 1 sheet, scale 1:500,000.
Hartman, G.W., 1973, General soil map, with soil interpretations for land use planning, Maricopa County, Arizona: U.S. Department of Agriculture, Soil Conservation Service, 49 p., 1 sheet, scale 1:500,000.
Land-use Planning, Soil Survey,