G. A. van Biesbroeck (1880 - 1974).

G. A. van Biesbroeck, 1880 January 21 - 1974 February 23.

G. Alter, 1891 March 13 - 1972 October 31.

G. B. Airy and the Discovery of Neptune

G. B. Airy and the Discovery of Neptune

G. B. Airy and the Discovery of Neptune

G. B. Hodierna's observations of nebulae and his cosmology.

G. C. F. Kunowski - ein Jurist am Fernrohr.

G. Florsch (1925-1976)

G. H. Herbig, Director of the Lick Observatorium.

G. J. Newbegin, Report of his Observatory

G. Kuiper (1905-1973)

G. M. Clemence, 1908 August 16 - 1974 November 22.

G. M. Clemence, 1908 August 16 - 1974 November 22.

G. P. Kuiper's Early Studies of Planets

G. Perry received the Jackson-Gwilt Medal and Gift of the Royal Astronomical Society.

G. Van Biesbroeck et W. H. Van den Bos

G. Van Biesbroeck. Micrometric Measures of Double Stars.

G. Wendelen, sa determination de l'annee tropique et du deplacement de l'apogee solaire

G. Witt