Harris, R.C., 1997, Land use in the San Carlos - Safford - Duncan Nonpoint-Source Management Zone: Arizona Geological Survey Open-File Report 97-18, 7 p., 3 sheets, scales 1:100,000 and 1:250,000.
Harris, R.C., 1997, Land use in the San Carlos - Safford - Duncan Nonpoint-Source Management Zone: Arizona Geological Survey Open-File Report 97-18, 7 p., 3 sheets, scales 1:100,000 and 1:250,000.
Land-use Planning,