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1. World Shoreline Boundary between Island Ponds and Islands, 2014 (Full-resolution)

2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at low resolution. GSHHG data are made available at 5 resolutions, ... United States. National Geospatial-Intelligence Agency.

2. World Shoreline Boundary between Island Ponds and Islands, 2014 (High-resolution)

2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at high resolution. High represents an 80 percent reduction in size... United States. National Geospatial-Intelligence Agency.

3. World Shoreline Boundary between Island Ponds and Islands, 2014 (Intermediate-resolution)

2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at intermediate resolution. Intermediate represents an 80 percent r... United States. National Geospatial-Intelligence Agency.

4. World Shoreline Boundary between Island Ponds and Islands, 2014 (Low-resolution)

2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the boundary between island ponds and islands at low resolution. Low represents an 80 percent reduction in size a... United States. National Geospatial-Intelligence Agency.