Date Span
1977
1
1977-1979
1
Apr 1977
1
Apr 1977-May 1979
1
Feb 1971-Feb 1973
1
Feb 1977-Apr 1979
1
Feb 1977-Aug 1978
1
Feb 1977-Aug 1979
1
Feb 1978
1
Jan 1978-Apr 1978
1
Jan 1979-Dec 1979
1
Jan 1979-Mar 1979
1
Jul 1977-Dec 1977
1
Jul 1978-Dec 1978
1
Mar 1978
1
May 1978-Jun 1978
1
Oct 1977-Jun 1979
1
Sep 1974-Nov 1979
1
Sep 1977
1
Sep 1978
1
[1991]
1
[Sep 1977]-Apr 1978
1
[c. 1978]
1