Date Span
20 Nov 1984
1
25 Sep 1982
1
27 Dec [1984?]
1
[Dec 1981]
1
11 Sep 1981
1
12 Sep 1983
1
12 Sep 1986
1
13 May 1986
1
14 Dec 1984
1
14 Sep 1986
1
16 May 1985
1
1981
1
1982
1
1989
1
2 Jan 1987
1
20 Sep 1983
1
22 Sep 1986
1
23 Jan 1987
1
23 Jul 1981
1
23 Mar 1986
1
23 Sep 1989
1
25 Nov 1986
1
26 May 1987
1
29 Oct 1986
1
30 Oct 1985
1
31 Jan 1987
1
31 Mar 1982
1
6 Apr 1986
1
6 Sep 1985
1
9 Jul 1985
1
Apr-Jun 1990
1
Apr-May 1989
1
Dec 1989-May 1990
1
Feb 1981-Apr 1984
1
Feb 1982-Nov 1986
1
Feb-Mar 1989
2
Feb-May 1989
1
Jan 1981-Feb 1990
1
Jan 1981-May 1984
1
Jan 1981-Sep 1988
1
Jan 1984-Jun 1984
1
Jan 1988-May 1991
1
Jul 1983-Aug 1985
1
Jul 1985-Jun 1986
1
Jun 1982
1
Mar 1982-Jul 1987
1
Mar-May 1989
1
Mar-Sep 1981
1
May 1989
1
Nov 1981-Aug 1984
1
more ...