Date Span
May-Jun 1983
3
Jun 1983
2
[1987]
2
[Jun 1983]
2
1 Oct-31 Oct 1991
1
Aug 1984-May 1990
1
Aug 1985-Aug 1992
1
Aug 1991-Feb 1992
1
Aug-Nov 1985
1
Dec 1983-Jan 1992
1
Dec 1983-Oct 1984
1
Dec 1985-Apr 1990
1
Dec 1986-Jul 1987
1
Dec 1991-Mar 1992
1
Feb 1979-Jan 1992
1
Feb 1984-Feb 1988
1
Feb 1985-May 1989
1
Feb 1988-Oct 1989
1
Feb 1988-Sep 1989
1
Feb-Dec 1984
1
Jan 1981-Feb 1990
1
Jan 1981-Oct 1990
1
Jan 1982-Jan 1983
1
Jan 1984-Nov 1989
1
Jan 1986-Jun 1987
1
Jan 1989-Mar 1992
1
Jan-Apr 1984
1
Jan-Dec 1985
1
Jan-Dec 1986
1
Jan-Dec 1987
1
Jun 1980-Dec 1980
1
Jun 1989-Aug 1991
1
Jun 1989-May 1992
1
Jun-Jul 1983
1
Mar 1981-Jan 1991
1
May 1988-Oct 1991
1
May-Sep 1983
1
Nov 1979-Jan 1984
1
Nov 1981-Aug 1984
1
Nov 1986-Jun 1987
1
Sep 1968-Oct 1972
1
Sep 1980-Feb 1987
1
Sep 1981-Apr 1985
1
Sep 1983-Jun 1989
1
[1988-1989]
1
[Apr 1976-Dec 1991]
1
[Apr-Jun 1983]
1
[Jan-Apr 1983]
1
[Mar 1991-Jan 1992]
1