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Shapefile
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Utilities and Communication
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Princeton
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Year
2008
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1. Global 2G mobile coverage, 2008
2008. Collins Bartholomew Ltd. Representation of the area covered by GSM (2G) mobile communications around the world as of first quarter 2008.
2. Global 3G mobile coverage, 2008
2008. Collins Bartholomew Ltd. Representation of the area covered by 3G mobile communications around the world as of first quarter 2008.