Ryszard Marek GrońskiWritingNo biography available.Known For6.3The Twenties, the Thirties19845.8Special Mission1987Fan ClubNo Nerds have favorited Ryszard Marek Groński yet — be the first.All fan clubsFrom NerdspinFilmographyWriting21987Special MissionFilmScreenplay★ 5.81984The Twenties, the ThirtiesFilmScreenplay★ 6.3