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1. Global Digital Elevation Model (GTOPO30), 2008

1996. EROS Data Center and Economic and Social Research Institute. Global Digital Elevation Model (GTOPO30) is a raster theme representing elevations worldwide at a resolution of 30 arc seconds (+- 1 Km). These dat... ESRI.

2. World Elevation, 2008

2008. United States. National Aeronautics and Space Administration, United States. National Geospatial-Intelligence Agency, and Economic and Social Research Institute. World Elevation, 2008 is a raster theme representing elevations worldwide. This dataset is comprised of data from the Shuttle Radar Topography Mis... ESRI.

3. World Topography and Bathymetry, 2008

2008. Economic and Social Research Institute. World Topography and Bathymetry, 2008 is a raster theme providing a color, hillshaded, Digital Elevation Model (DEM) based image of all continents ... ESRI.

4. World WorldSat Color Shaded Relief, 2008

2008. WorldSat International Inc. and Economic and Social Research Institute. World WorldSat Color Shaded Relief, 2008 is a raster theme representing a cloud-free view of the Earth produced by mosaicking hundreds of individua... ESRI.