G. L Barr

• Application of ground-penetrating radar methods in determining hydrogeologic conditions in a karst area, west-central Florida
• Ground-water contamination potential and quality in Polk County, Florida
• Hydrogeology of the surficial and intermediate aquifer systems in Sarasota and adjacent counties, Florida
• Water-quality data from a landfill-leachate treatment and disposal site, Pinellas County, Florida, January 1979-August 1980