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2013. Geological Survey (U.S.). This raster layer is a100-meter resolution land and water mask in (GeoTIFF format) of Puerto Rico and the U.S. Virgin Islands, with separate values... National Atlas of the United States.
2001. United States. Minerals Management Service. This polygon shapefile shows the official protraction diagram (OPD) and leasing map boundaries for the United States, covering areas of the Outer C... Geological Survey (U.S.).