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.).
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2001. Geological Survey (U.S.). This raster layer is a georeferenced image containing land cover data for Puerto Rico and the U.S. Virgin Islands, in an Albers Equal-Area Conic pr... Geological Survey (U.S.).
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.
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.
2013. Geological Survey (U.S.). The Satellite View of Puerto Rico and the U.S. Virgin Islands map layer is a 100-meter resolution simulated natural-color image of Puerto Rico and ... National Atlas of the United States.
2001. Geological Survey (U.S.). This raster layer is a georeferenced image containing tree canopy data for Puerto Rico and the U.S. Virgin Islands, in an Albers Equal-Area Conic p... Geological Survey (U.S.).
127. Color Puerto Rico and the U.S. Virgin Islands Shaded Relief, 200-Meter Resolution, Albers projection
2002. National Atlas of the United States. The color Puerto Rico and U.S. Virgin Islands shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain of P... National Atlas of the United States.
2006. EROS Data Center. The grayscale Puerto Rico and U.S. Virgin Islands shaded relief data were derived from National Elevation Dataset (NED) data, and show the terrain ... National Atlas of the United States.
1971. Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the nitrogen di... United States. Bureau of Transportation Statistics.
1990. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the nitrogen di... United States. Bureau of Transportation Statistics.