1980 WF
1980 YS
1980 YS
1980-1985 astrometric observations of the first eight satellites of Saturn at Pic-du-Midi, ESO and CFH
1980-81 observations of Miranda - New orbit and mass of Ariel and Umbriel
1981 April 16 (meeting)
1981 April 16 meeting of the Royal Astronomical Society
1981 CW
1981 CW
1981 December 11 meeting of the Royal Astronomical Society
1981 December 1l (meeting)
1981 FD
1981 FD
1981 February 13 meeing of the Royal Astronomical Society
1981 IAPPP Workshops on Photoelectric Photometry
1981 international conference on Fourier transform infrared spectroscopy. Conference held at Columbia, S.C., USA, 8 - 12 June 1981.
1981 January 9 (meeting)
1981 January 9 meeting of the Royal Astronomical Society
1981 JD
1981 Light Curve of II Pegasi