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- United States. Bureau of Transportation Statistics10
- Hunt, Raquel2
- Institute for Water Resources (U.S.). Navigation Data Center2
- Beningo, Steve1
- Blades, Doug1
- Firestine, Theresa1
- Hudgins, Andrew1
- Jessberger, Steven1
- Liu, Zhi1
- Lubkin, Samantha 1
- United States. Bureau of Customs and Border Protection1
- United States. Bureau of Transportation Statisticsf1
- United States. Federal Aviation Administration1
- United States. Federal Highway Administration1
- United States. Federal Transit Administration1
- Waterborne Commerce Statistics Center (U.S.)1