Gerard Schalk,Assen

02/08/1972 25/05/1973 10/07/1973 01/08/1973 04/08/1973 08/09/1973 07/06/1974 14/06/1974 15/06/1974 21/06/1974 02/07/1974 05/07/1974 11/07/1974 16/07/1974 17/07/1974 23/07/1974 18/09/1974 29/06/1977 12/07/1977 19/08/1977 02/06/1978 03/06/1978 07/06/1978