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Collins Bartholomew Ltd.
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Restricted
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Stanford
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Polygon
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Year
2009
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1. Global 2G Mobile Communications Network Coverage, 2009
2009. Collins Bartholomew Ltd. This polygon shapefile is a representation of the coverage area for 2G mobile communications networks around the world in 2009. The data is created... Collins Bartholomew Ltd.
2. Global 3G Mobile Communications Network Coverage, 2009
2009. Collins Bartholomew Ltd. This polygon shapefile is a representation of the coverage area for 3G mobile communications networks around the world in 2009. The data is created... Collins Bartholomew Ltd.