Date Span
[1980s]
6
10 Mar 1986
1
13-17 Sep 1986
1
17 Apr 1986
1
19 May 1981
1
1977-1979
1
1981-1990
1
1985
1
21 Feb 1986
1
21 Nov 1983
1
31 Jan 1987
1
6 Feb 1986
1
6 Jun 1986
1
7 Mar 1985
1
9 Aug 1989
1
9 Mar 1984
1
9 Oct 1981
1
Aug 1982
1
Aug 1986-Feb 1988
1
Jan-Sep 1985
1
Jun 1979-Dec 1979
1
Jun 1980-Nov 1983
1
[1979-1985]
1
[1982-1988]
1
[1991]
1
n.d.
1