Date Span
1989
3
1983-1986
1
1987
1
1988
1
1988-1989
1
3 Jun 1990
1
Apr 1988-Jan 1989
1
Feb 1984-Aug 1985
1
Jan 1986-Feb 1987
1
Jun 1987-Aug 1988
1
Jun 1989
1
Mar-May 1990
1
Nov 1988
1
Oct 1982-Feb 1983
1
Sep 1983-Jun 1989
1
Sep 1983-Mar 1987
1
Sep 1987-Jun 1989
1
[1984-1991]
1
[1985-1987]
1
[1987]
1
[1988-1989]
1
[1988]
1
[Jun 1988-Mar 1989]
1
n.d. [1980s]
1