Bert Witteveen,Drogeham

08/06/1987 16/07/1987 26/09/1987 19/03/1988 05/05/1988 05/05/1988 13/05/1988 20/08/1988 03/09/1988 10/06/1989 17/06/1989 17/06/1989 28/06/1989 22/09/1990