Date Span
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1957
1
1960-1968
1
1961-1965
1
1963, 1965
1
1967 - [1979?]
1
1970s
1
1971-1978
1
1971-85
1
1973
1
1974-1983
1
1975-1983
1
1978; 1979; 1988; 1993; n.d.
1
1983-1999
1
1983-2009
1
1986 - May 2009
1
1986-2017
1
1987-1997; 2000-2016
1
1988-1989
1
1991-1992; 1995-1997
1
1992 - 2016
1
1992-1994
1
2009 - 2015
1
2009-2016
1
2015
1
2016
1
2017
1
2018
1
9 Nov 1990 - 15 Feb 1991
1
Jan 1967 - Oct 1971
1
Jan-Mar 1992
1
June 1962 - Dec 1966
1
Nov 1959 - Dec 1960
1
[1905]-1985
1
[1905]-[1949], 21 February 1985
1
[1921-22] to 1929-30, though mainly 1922-23
1
[1969-1982]
1
[197-]
1
[c.1935]-[c.1990]
1
c.1897 - 1909
1
c.1910', 1913, 1923-1938
1
ca. 1870 - 1954
1
ca.1903 - 1945
1
n.d, 1930s
1
n.d, 1970s
1
n.d.
6
n.d. 1942-1943
1
n.d. [c.1975-1980]
21
n.d., 1971-1974
1
n.d., [ca.1902 -1938]
1
n.d., circa 1970s
1