1972 February 11 meeting of the Royal Astronomical Society

1972 January 14 (meeting)

1972 January 14 meeting of the Royal Astronomical Society

1972 March 10 (meeting)

1972 March 10 meeting of the Royal Astronomical Society

1972 May 12 (meeting)

1972 May 12 meeting of the Royal Astronomical Society

1972 November 10 (meeting)

1972 November 10 meeting of the Royal Astronomical Society

1972 October 13 (meeting)

1972 October 13 meeting of the Royal Astronomical Society

1972 RA

1972 values for geochemical reference samples

1972 values for international geochemical reference samples

1972 XA.

1972MAR10 Bolide / Close Call

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

1973 April 13 (meeting)

1973 April 13 meeting of the Royal Astronomical Society

1973 August 10 meeting of the Royal Astrological Society