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2001. Geological Survey (U.S.). This raster layer is a georeferenced image containing impervious surface data for Puerto Rico and the Virgin Islands. Data are in an Albers Equal-A... Geological Survey (U.S.).
2013. Geological Survey (U.S.). This lsyer is a georeferenced raster image containing a natural-earth image of Puerto Rico and the U.S. Virgin Islands. The image is land cover in ... National Atlas of the United States.