Bulletin Géodésique (1946-1975)December 1964, Volume 74, Issue 1, pp 315–316 | Cite asXIIth General Assembly, IAU Hamburg, 24 August–3 September 1964ArticleFirst Online: 07 November 2008 9 Downloads This is a preview of subscription content, log in to check access.Copyright information© Springer-Verlag 1964