"68" . . "GBR" . . . "1981" . . "Marlboro British Grand Prix" . . . . . "1981 British Grand Prix" . . "Report" . . . "GBR" . "4719.0" . . . . "4718.596608" . "Britain" . "1981 British Grand Prix" . "320864.569344" . . . "320892.0" . "British Grand Prix" . .