. . . . . . . . "Old River control structure, Louisiana hearing before a subcommittee of the Committee on Appropriations, United States Senate, Ninety-sixth Congress, second Session : special hearing, Corps of Engineers--civil nondepartmental witnesses"@en . . . . "Old River control structure, Louisiana hearing before a subcommittee of the Committee on Appropriations, United States Senate, Ninety-sixth Congress, second session : special hearing, Corps of Engineers--civil nondepartmental witnesses"@en . . . . . . . "Old River control structure, Louisiana : hearing before a subcommittee of the Committee on Appropriations, United States Senate, Ninety-sixth Congress, second session : special hearing, Corps of Engineers--civil nondepartmental witnesses"@en . . . . "Atchafalaya River (La.)" . . . . "Mississippi River" . .