Keywords: Mid-Atlantic Region location map.gif Mid-Atlantic Region location map from Earl A Greene et al http //pubs usgs gov/fs/old 2004/3067/ Ground-Water Vulnerability to Nitrate Contamination in the Mid-Atlantic Region USGS Fact Sheet FS 2004-3067 2005 Retrieved 25 April 2013 2013-04-28 21 22 14 http //pubs usgs gov/fs/old 2004/3067/location_big gif United States Geological Survey PD-USGov-USGS PD-USGov Uploaded with UploadWizard United States Geological Survey Maps of regions of the United States |