00625nam a2200169Ia 4500003000900000008004100009040001600050080001200066245017000078260006800248300001400316490001700330500002600347650004100373650002000414700002100434IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a52bDOY 2aA long range program in space astronomybposition paper of the astronomy mission board July, 1969cedited by R. O. Doyle                                               aWashingtonbNational Aeronautics and Space Administrationc1969  axi, 305p.  aNASA SP; 213  aDonated by Mrs. Bappu  aAstronomy and Astrophysics Thesaurus  aSpace astronomy  aDoyle, R O., ed.