1. Maps of estimated nitrate and arsenic concentrations for basin-fill aquifers of the Southwestern United States Author/Creator: Beisner, Kimberly R., cartographer Publication/Creation: Reston, Va. : U.S. Department of the Interior, U.S. Geological Survey, 2012 Resource Type: Map Access & Availability: Loading
2. Distribution of dissolved-solids concentrations and temperature in ground water of the Gulf Coast aquifer systems, south-central United States Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Austin, Texas : Department of the Interior, U.S. Geological Survey, 1988 Resource Type: Map Access & Availability: Loading