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Publisher
- ESRI31
- Tele Atlas North America, Inc./Geographic Data Technology, Inc.17
- Tele Atlas North America, Inc.11
- Environmental Systems Research Institute (ESRI)8
- Department of Commerce, Census Bureau5
- U.S. Geological Survey5
- United States Geological Survey4
- ESRI Business Information Solutions3
- Environmental Systems Research Institute (Redlands, Calif.)3
- Federal Aviation Administration2
- Bureau of Transportation Statistics (BTS)1
- GeoSystems Global Corporation in association with National Geographic Maps and Melcher Media, Inc.1
- Group 1 Software, Inc.1
- Microsoft Corporation1
- United States Central Intelligence Agency1