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Author
- Battelle Memorial Institute1
- Beningo, Steve1
- Blades, Doug1
- Firestine, Theresa1
- Geological Survey (U.S.)1
- Hudgins, Andrew1
- Hunt, Raquel4
- Institute for Water Resources (U.S.). Navigation Data Center2
- Jessberger, Steven1
- John A. Volpe National Transportation Systems Center (U.S.)1
- Liu, Zhi1
- Lubkin, Samantha 1
- Miller, David1
- Rawson, Peg2
- Stackhouse, Cecil17
- Strocko, Ed2
- United States. Bureau of Customs and Border Protection1
- United States. Bureau of Transportation Statistics50
- United States. Bureau of Transportation Statisticsf1
- United States. Bureau of the Census. Geography Division7