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Author
- Thomas, William G., 1964-6
- National Atlas of the United States3
- United States. Bureau of Transportation Statistics3
- Environmental Systems Research Institute (Redlands, Calif.)2
- Federal Railroad Administration (FRA)2
- Hunt, Raquel2
- Bureau of Transportation Statistics1
- Bureau of Transportation Statistics (BTS)1
- ESRI1
- Geological Survey (U.S.)1
- Rail Companies1
- Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)1
- State DOTs1
- Tele Atlas B.V.1
- United States. Federal Railroad Administration1