| Institution: | (1) The RAND Corporation, Santa Monica, California, U.S.A.;(2) Institute for Theoretical Astronomy, Leningrad, U.S.S.R.;(3) Astronomical Institute, Prague, Czechoslovakia;(4) PACTEL, London, England;(5) Jet Propulsion Laboratory, Pasadena, California, U.S.A.;(6) Bureau des Longitudes, Paris, France;(7) The Ohio State University, Columbus, Ohio, U.S.A.;(8) U.S. Naval Observatory, Washington, D.C., U.S.A.;(9) Royal Greenwich Observatory, Sussex, England;(10) Air Survey, and Mapping (TsNIIGAik), Central Research Institute of Geodesy, Moscow, U.S.S.R. |
