00913nam a2200217Ia 4500003000900000008004100009040001600050080002300066111007600089245027100165260004600436300001600482490002700498650001500525650004100540650002400581650002200605700002300627700002300650700002200673IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a082.2:52bIAU-C127  aColloquium of the International Astronomical UnioncUSAd1990 Oct. 4-20 0aReference systemsbproceedings of the 127th Colloquium of the International Astronomical Union on Reference systems held in Virginia Beach, VA, USA 14-20 October 1990cedited by J. A. Hughes, C. A. Smith and  G. H. Kaplan                                               aWashingtonbU. S. Naval Observatoryc1991  axiii, 419p.  aIAU Colloquium; no.127  aAstrometry  aAstronomy and Astrophysics Thesaurus  aCelestial mechanics  aReference Systems  aHughes, J. A., ed.  aKaplan, G. H., ed.  aSmith, C. A., ed.