Johan Bruinsma,Westerbork

02/05/1992 22/08/1992 19/09/1992 21/11/1992 23/05/1994 23/06/1994 17/09/1994 19/11/1994 04/01/1995 01/06/1995 05/08/1995 12/08/1995 24/08/1995 16/09/1995 18/11/1995 03/01/1996 28/04/1996 30/05/1996 15/03/1997