The economic importance and financial challenges of recapitalizing the nation's Inland Waterways Transportation System : hearing before the Subcommittee on Water Resources and Environment of the Committee on Transportation and Infrastructure, House of Representatives, One Hundred Twelfth Congress, first session, September 21, 2011.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2012.