. . . . . . . . . . . "Oil merger activity hearing before the Committee on the Judiciary, United States Senate, Ninety-eighth Congress, second session, on the reasons for current merger activity within the oil industry and assess their effect on the nation, March 15, 1984"@en . . "Oil merger activity : hearing before the Committee on the Judiciary, United States Senate, Ninety-eighth Congress, second session, on the reasons for current merger activity within the oil industry and assess their effect on the nation, March 15, 1984"@en . . . . . .