1964 January 24 (Reports of Geophysdisc)

1964 July 22 (Reports of Geophysdisc)

1964 July 24 meeting of the Royal Astronomical Society

1964 March 13 (meeting)

1964 March 13 meeting of the Royal Astronomical Society

1964 May 8 (meeting)

1964 May 8 meeting of the Royal Astronomical Society

1964 November 13 (meeting)

1964 November 13 meeting of the Royal Astronomical Society

1964 October 9 (meeting)

1964 October 9 meeting of the Royal Astronomical Society

1964 Scientific Meeting

1964 September 7 & 8 meeting of the Royal Astronomical Society

1964 Summer meeting of the Royal Astronomical Society

1965 April 23 (Reports of Geophysdisc)

1965 April 9 (meeting)

1965 April 9 meeting of the Royal Astronomical Society

1965 December 10 (meeting)

1965 December 10 meeting of the Royal Astronomical Society

1965 February 12 meeting of the Royal Astronomical Society