Tourism in troubled times [electronic resource] : hearing before the Subcommittee on Competitiveness, Innovation, and Export Promotion of the Committee on Commerce, Science, and Transportation, United States Senate, One Hundred Eleventh Congress, first session, May 13, 2009.
Washington : U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2010.