2005. 2/18/05. Not given.
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2005. Created using ArcGis8. 1/6/05. Not given.
2005. Created using ArcGis8. 1/6/05. Not given.
2005. Geographical Survey Institute. Canada Landcover is a raster theme representing land cover classifications throughout Canada at a resolution of 30 arc seconds. This layer is a co... GeoAccess Division, Canada Centre for Remote Sensing, Natural Resources Canada, Government of Canada.
2005. 8/9/05. Not given.
2005. Swithinbank, Williams, Ferrigno. Projection: Polar Stereographic Projection: Standard Parallel -71º; Series: USGS Geologic Investigations Series. United States Geological Survey.
2005. Geological Survey (U.S.). This polygon shapefile portrays the 1990 state and county boundaries of the United States, Puerto Rico, and the U.S. Virgin Islands. The map layer ... Geological Survey (U.S.).
2005. Gap Analysis Program (U.S.). This polygon shapefile contains combined PAD-US Easements features for the United States. The USGS Protected Areas Database of the United States (P... Gap Analysis Program (U.S.).
2005. Gap Analysis Program (U.S.). This polygon shapefile contains combined PAD-US Fee and Easements features for the United States. The USGS Protected Areas Database of the United S... Gap Analysis Program (U.S.).
2005. Gap Analysis Program (U.S.). This polygon shapefile contains PAD-US Fees features for the United States. The USGS Protected Areas Database of the United States (PAD-US) is the ... Gap Analysis Program (U.S.).