1953 December 11 meeting of the Royal Astronomical Society

1953 February 13 meeting of the Royal Astronomical Society

1953 January 9 meeting of the Royal Astronomical Society

1953 July 22 meeting of the Royal Astronomical Society

1953 March 13 meeting of the Royal Astronomical Society

1953 November 13 meeting of the Royal Astronomical Society

1953 October 9 meeting of the Royal Astronomical Society

1953 Summer meeting of the Royal Astronomical Society

1954 April 9 meeting of the Royal Astronomical Society

1954 December 10 meeting of the Royal Astronomical Society

1954 February 12 meeting of the Royal Astronomical Society

1954 January 8 meeting of the Royal Astronomical Society

1954 March 12 meeting of the Royal Astronomical Society

1954 May 14 meeting of the Royal Astronomical Society

1954 November 12 meeting of the Royal Astronomical Society

1954 October 8 meeting of the Royal Astronomical Society

1955 April 6 meeting of the Royal Astronomical Society

1955 December 9 meeting of the Royal Astronomical Society

1955 February 11 meeting of the Royal Astronomical Society

1955 January 14 meeting of the Royal Astronomical Society