The Online Books Page

Books by G. L. Barr:

Books in the extended shelves:

• Barr, G. L.: Application of ground penetrating radar methods in determining hydrologic conditions in a karst area, west-central Florida (U.S. Geological Survey ;, 1993), also by Pinellas County (Fla.) and Geological Survey (U.S.) (page images at HathiTrust)
• Barr, G. L.: Chemical quality of landfill leachate in treatment ponds and migration of leachate in the surficial aquifer, Pinellas County, Florida (U.S. Geological Survey, 1984), also by Mario Fernandez, United States Department of the Interior, Geological Survey (U.S.), and Pinellas County (Fla.) (page images at HathiTrust)
• Barr, G. L.: Ground-water contamination potential and quality in Polk County, Florida (U.S. Dept. of the Interior, U.S. Geological Survey ;, 1992), also by Southwest Florida Water Management District (Fla.), Polk County (Fla.), and Geological Survey (U.S.) (page images at HathiTrust)
• Barr, G. L.: Hydrogeology of the surficial and intermediate aquifer systems in Sarasota and adjacent counties, Florida (U.S. Dept. of the Interior, U.S. Geological Survey ;, 1996), also by Geological Survey (U.S.) and Southwest Florida Water Management District (Fla.) (page images at HathiTrust)

Find more by G. L. Barr at your library, or elsewhere.