Date Span
14 Oct 1982
2
31 Jan 1987
2
9 May 1984
1
[Dec 1981]
1
1 Aug 1986
1
1 Sep 1981
1
10 Jun 1984
1
10 May 1989
1
11 Mar 1986
1
11 May 1989
1
12 Mar 1985
1
13 Jan 1986
1
14 Apr 1989
1
14 Jun 1986
1
16 Dec 1981
1
17 Jun 1986
1
19 Jan 1986
1
19 Jan 1989
1
20 Dec 1984
1
20 Mar 1981
1
23 Dec 1988
1
23 Nov 1986
1
23 Nov 1987
1
24 Oct 1986
1
24 Sep 1983
1
26 Nov 1986
1
30 Aug-2 Sep 1987
1
4 May 1981
1
5 Jun 1981
1
5 Jun 1986
1
5 Jun 1987
1
7 Oct 1981
1
Jun 1980-Dec 1980
1
[4] Nov 1982
1
[Apr-May 1988]
1
n.d.
1