00858nam a2200205Ia 4500003000900000008004100009020001800050040001600068080002300084111007700107245023400184260003700418300001500455490005100470650004100521650001600562650001800578700001900596710003700615IN-BaIIA211028s9999    xx            000 0 eng d  a0-7923-1133-7  cIIA Library  a52(082.1)bASS-166  aColloquium of the International Astronomical UnioncUSAd1990 Apr. 24-27 0aObservatories in earth orbit and beyondbproceedings of the 123rd colloquium of the International Astronomical Union held in Greenbelt, Maryland, USA, April 24-27,1990cedited by Y. Kondo                                            aDordrechtbKluwer Academicc1990  axii, 572p.  aAstrophysics and Space Science Library; v. 166  aAstronomy and Astrophysics Thesaurus  aEarth orbit  aObservatories  aKondo, Y., ed.  aInternational Astronomical Union