Reference: UDEM
Status:
STD 2005/06/07
Reference text:
US Department of the Interior, US Geological Survey (USGS).
Digital Elevation Models (DEMs)
[online]. Sioux Falls (South Dakota): USGS EROS Data Center, ca. 2001 [cited 20 March 2012]. Available from World Wide Web: <
http://rockyweb.cr.usgs.gov/elevation/dpi_dem.html
>.
Normative:
No
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