2011. Oak Ridge National Laboratory. The LandScan Global Population Database (2011) contains population counts at 30 arc second resolution (1 km. or finer). "Using an innovative approa... Oak Ridge National Laboratory.
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2011. This raster dataset contains population counts at 30 arc second resolution (1 km. or finer) for 2011. LandScan integrates daytime movements and col... Oak Ridge National Laboratory.
2011. Oak Ridge National Laboratory. This raster dataset contains areas of 30 second cells. The data table (VAT) contains the cell areas in the field: [Area]. The units are square kilo... Oak Ridge National Laboratory.
2011. TomTom North America, Inc. and Environmental Systems Research Institute (Redlands, Calif.). U.S. Census Block Groups represents the U.S. Census block groups of the United States in the 50 states, the District of Columbia, and Puerto Rico. Esri.