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- Environmental Systems Research Institute (Redlands, Calif.)[remove]23
- TomTom North America, Inc.6
- Michael Bauer Research GmbH4
- Tele Atlas (Firm : U.S.)3
- Geological Survey (U.S.)2
- U.S. Census Bureau, Geography Division2
- DeLorme Publishing Company1
- National Geographic Society (U.S.)1
- U.S. Census Bureau. Geography Division1