2011. This polygon shapefile is a representation of the coverage area for 2G mobile communications networks around the world in 2011. The data is created... Collins Bartholomew Ltd.
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2011. This polygon shapefile is representation of the area covered by 3G mobile communications networks around the world in 2011. The data is created fro... Collins Bartholomew Ltd.
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.