1972 October 13 meeting of the Royal Astronomical Society

1972 XA.

1972MAR10 Bolide / Close Call

1973 - 1999, historique des expéditions belges d'éclipses totales.

1973 April 13 meeting of the Royal Astronomical Society

1973 August 10 meeting of the Royal Astrological Society

1973 December 14 meeting of the Royal Astronomical Society

1973 dust storm on Mars - Maps from hourly photographs

1973 February 9 meeting of the Royal Astronomical Society

1973 January 12 meeting of the Royal Astronomical Society

1973 March 9 meeting of the Royal Astronomical Society

1973 May 11 meeting of the Royal Astronomical Society

1973 November 9 meeting of the Royal Astronomical Society

1973 October 12 meeting of the Royal Astronomical Society

1973 Photometry of V725 Sgr

1973: Research Progress on a Broad Front: Earth and Planetary Science: The Copernican Quincentenary

1973: Research Progress on a Broad Front: Physics and Astronomy: Unexpected Results May Require New Concepts

1974 December 13 meeting of the Royal Astronomical Society

1974 February 8 meeting of the Royal Astronomical Society

1974 January 11 meeting of the Royal Astronomical Society