Eric Ploeg,Assen

06/05/1978 20/05/1978 02/06/1978 08/06/1979 14/08/1979 05/09/1979 27/10/1979 31/05/1980 19/06/1980 03/09/1980 25/10/1980 25/06/1981 15/09/1981 29/04/1985 17/08/1985 07/09/1985 04/06/1986 25/10/1986