TY - RPRT TI - Quality of Shallow Groundwater and Drinking Water in the Mississippi Embayment-Texas Coastal Uplands Aquifer System and the Mississippi River Valley Alluvial Aquifer, South-Central United States, 1994-2004 AU - Heather L. Welch AU - James A. Kingsbury AU - Roland W. Tollett AU - Ronald C. Seanor PY - 2009 DO - 10.3133/sir20095091 UR - https://pubs.usgs.gov/publication/sir20095091 ID - sir20095091 ER -