00557nam a2200193Ia 4500003000900000008004100009040001600050080001200066100001900078245008600097260002000183300001500203490003200218500002600250650001400276650004100290650001700331650001500348IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a52bGRE  aGregory, R. A. 4aThe vault of heavencR. A. Gregory                                                 aLondonbMethuen  aviii,188p.  aUniversity Extension Series  aDonated by Mrs. Bappu  aAstronomy  aAstronomy and Astrophysics Thesaurus  aAstrophysics  aTelescopes