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DEM
Digital Elevation Model. A geospatial dataset describing topography in an area. The name refers also to a type of digital product provided by USGS.
Explore these categories:
Topography(describes)
The shape of the land surface.
Geospatial datasets(instance of)
Collections of related digital information that are geographically referenced.
Maps and atlases(contribute to)
Representation, usually on a flat surface, of a part or whole of the Earth or other parts of the universe. Collections of maps linked digitally or bound together in a book are called atlases.

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