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Author
Collins Bartholomew Ltd.
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Subject
Utilities and Communication
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Institution
Princeton
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Year
2012
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1. Global 2G mobile coverage, 2012
2012. Collins Bartholomew Ltd. Representation of the area covered by GSM (2G) mobile communications around the world as of December 2012.
2. Global 3G mobile coverage, 2012
2012. Collins Bartholomew Ltd. Representation of the area covered by 3G mobile communications around the world as of December 2012.
3. Global 4G mobile coverage, 2012
2012. Collins Bartholomew Ltd. Representation of the area covered by 4G mobile communications around the world as of December 2012.