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Author
- United States. Bureau of Transportation Statistics27
- TomTom North America, Inc.21
- Stackhouse, Cecil17
- Esri13
- Environmental Systems Research Institute (Redlands, Calif.)10
- National Atlas of the United States10
- Geological Survey (U.S.)7
- United States. Bureau of the Census. Geography Division6
- U.S. Department of Commerce, Census Bureau4
- National Atlas of the United States and the United States Geological Survey2
- Tele Atlas (Firm : U.S.)2
- U.S. Department of Commerce, Census Bureau, Geography Division2
- Rawson, Peg1
- Strocko, Ed1
- U.S. Census Bureau, Geography Division1
- U.S. Census Bureau. Geography Division1
- United States Geological Survey1
- United States. Federal Highway Administration1
- United States. Minerals Management Service1
- United States. Office of the Deputy Under Secretary of Defense (Installations and Environment)1