1973 NA = 1992 OA

1973 November 9 (meeting)

1973 November 9 meeting of the Royal Astronomical Society

1973 October 12 (meeting)

1973 October 12 meeting of the Royal Astronomical Society

1973 Photometry of V725 Sgr

1973 September 7 two-ribbon flare. I - Morphology and loop expansion. II - Physical properties of the loops in the arcade

1973 September 7 Two-Ribbon Flare. II. Physical Properties of the Loops in the Arcade

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 April 10 (meeting)

1974 December 13 (meeting)

1974 December 13 meeting of the Royal Astronomical Society

1974 Ethiopian Rift Geodimeter Survey

1974 February 8 (meeting)

1974 February 8 meeting of the Royal Astronomical Society

1974 January 11 (meeting)

1974 January 11 meeting of the Royal Astronomical Society

1974 MA = 1993 OL

1974 MA = 1993 OL.