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