Lunar Distance and Related Observations Proceedings of the 63rd Colloquium of the International Astronomical Union, held at Grasse, France, May 22-27, 1981

Proceedings of the Second Trieste Colloquium on Astrophysics, 12-17 September, 1968

Proceedings of the 56th Colloquium of the International Astronomical Union Held in Warsaw, Poland, September 8-12, 1980

Proceedings of the 11th Eslab Symposium, Organized by the Space Science Department of the European Space Agency, Held at Frascati, Italy, 11-14 May 1976

Gravito-Electrodynamics and EHD

Applications in Astrophysics and Related Fields

Proceedings of the Joint Discussion-17 at the 23rd General Assembly of the International Astronomical Union, organised by the Commission 41 (History of Astronomy), held in Kyoto, August 25-26, 1997

The Millimeter-Wave Observatory of the National Radio Astronomy Observatory