Jan van Berkum,Heerenveen

03/08/1991 05/08/1991 21/08/1991 24/08/1991 29/08/1991 31/08/1991 14/09/1991 18/09/1991 27/04/1993 11/05/1993 12/05/1993 25/05/1993 07/06/1993 07/06/1993 08/06/1993 09/06/1993 10/06/1993 29/06/1993 23/07/1993 24/07/1993