Date Span
Jan 1980-May 1980
2
[1980s]
2
1984
1
8 Aug 1988
1
Apr 1979-Mar 1980
1
Aug 1983
1
Dec 1979-May 1980
1
Jan 1973-Jun 1982
1
Jan 1988
1
Jul 1979-Nov 1980
1
Jul 1979-Oct 1979
1
Jun 1979-Dec 1979
1
Jun 1980-Dec 1980
1
Mar 1979-Feb 1980
1
Mar 1982-Jul 1987
1
Nov 1979-Jul 1980
1
Sep 1974-Nov 1979
1
[1987-1988]
1
[Mar 1991-Jan 1992]
1