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Author
- United States. Bureau of Transportation Statistics11
- National Atlas of the United States5
- Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)4
- National Atlas of the United States and the United States Geological Survey3
- National Renewable Energy Laboratory (U.S.)3
- ESRI2
- Environmental Systems Research Institute (Redlands, Calif.)2
- Esri2
- Geographic Data Technology, Inc. (GDT)2
- Geological Survey (U.S.)2
- Hunt, Raquel2
- Institute for Water Resources (U.S.). Navigation Data Center2
- TomTom North America, Inc.2
- Vanderbilt Engineering Center for Transportation Operations and Research2
- Waterborne Commerce Statistics Center (U.S.)2
- AIR CANADA CARGO1
- AIR CARGO WORLD ONLINE/2001 AIR EXPRESS DIRECTORY1
- AIR CARGO WORLD ONLINE/2002 AIRPORT DIRECTORY1
- AIR CARGO WORLD ONLINE/2002 FORWARDER DIRECTORY1
- AIR JAMAICA1