. "1980-08-30" . . "final season" . . . "18th season" . . . . . "Season 18" . . "season 18" . . . "1980/81 Series" . "18" . "Doctor Who (season 18)" . "Doctor Who (season 18)" . "28" . . . . . "Season 18 (1980\u201381)" . "eighteenth season" . . "Season Eighteen" . "season eighteen" .