Date Span
1 Oct 1989-21 Feb 1990
1
14 Jun 1984
1
1977-1979
1
1979-1988
1
1982-1986
1
26 Mar 1984-8 Jun 1984
1
30 Aug-1 Nov 1990
1
5 Nov-28 Nov 1991
1
5 Sep-30 Sep 1991
1
9 Dec 1991-16 Mar 1992
1
9 Jan 1991
1
Feb 1977-Apr 1979
1
Feb 1977-Nov 1980
1
Feb 1988-Mar 1990
1
Jan-Jun 1984
1
Jul 1983-Jun 1985
1
Jun 1983-Jun 1984
1
Jun 1988-Jun 1989
1
May 1988-Jan 1991
1
Nov 1988-Nov 1990
1
Oct 1983-Jun 1984
1
Sep 1974-Nov 1979
1
Sep-Dec 1991
1
[1985-1989]
1
[1987]
1
[1991]
1
[Apr 1980-Dec 1990]
1