Vydavatel U.S. Geological Survey, Department of the Interior
Datum vydání před téměř 10 roky
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This map layer contains a natural-earth image of the conterminous United States. The image is land cover in natural colors combined with shaded relief, which produces a naturalistic rendition of the Earth's surface. The data set is in an Albers Equal-Area Conic projection. The Natural Earth data were produced from existing National Atlas land cover, tree canopy, elevation, and satellite view data.