2001. Oak Ridge National Laboratory, Marie L. Urban, Research Staff. LandScan Global Population Database for 2001. Population counds at 30 arc second resolution.
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2002. Oak Ridge National Laboratory, Marie L. Urban, Research Staff. LandScan Global Population Database for 2002. Population counds at 30 arc second resolution.
2004. Oak Ridge National Laboratory, Marie L. Urban, Research Staff. LandScan Global Population Database for 2004. Population counds at 30 arc second resolution.
2018. Collins Bartholomew Ltd. Representation of the area covered by GSM (2G) mobile communications around the world as of December 2018.
2020. Collins Bartholomew Ltd. Raster data representing the area covered by 2G mobile communications around the world as of 2020.
2018. Collins Bartholomew Ltd. Representation of the area covered by 3G mobile communications around the world as of December 2018.
2020. Collins Bartholomew Ltd. Raster data representing the area covered by 3G mobile communications around the world as of 2020.
2018. Collins Bartholomew Ltd. Representation of the area covered by 4G mobile communications around the world as of December 2018.
2020. Collins Bartholomew Ltd. Raster data representing the area covered by 4G mobile communications around the world as of 2020.
1997. National Imagery and Mapping Agency. Smaller Rivers & Streams is a line theme representing inland water feature throughout the world. This layer was crated as a part of the VMap Level... National Imagery and Mapping Agency.