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2012. Geological Survey (U.S.). This map layer is a 100-meter resolution grayscale shaded relief image of Puerto Rico and the U.S. Virgin Islands, in an Albers Equal-Area Conic pr... 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.
2013. Geological Survey (U.S.). The Satellite View with Shaded Relief of Hawaii map layer is a 100-meter resolution simulated natural-color image of Hawaii, with relief shading ad... National Atlas of the United States.
2013. Geological Survey (U.S.). The Satellite View with Shaded Relief of Puerto Rico and the U.S. Virgin Islands map layer is a 100-meter resolution simulated natural-color image ... National Atlas of the United States.
2014. Geological Survey (U.S.). This line shapefile shows elevation contour lines for the conterminous United States. The map layer was derived from the 100-meter resolution eleva... National Atlas of the United States.