00951nam a2200229Ia 4500003000900000008004100009040001600050080002500066111008400091245025100175260006800426300001600494490001700510500002600527650004100553650001100594700002100605700001800626700002100644700001900665710003700684IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.64(082.2)bTHE-1  aInternational Astronomical Union colloqiumn25thcMarylandd1974 Oct. 28 Nov. 1 4aThe study of cometsbpt. 1, proceedings of the IAU colloquium No. 25 held in Maryland, Goddard Space Flight Center, Greenbelt, Maryland October 28 November 1, 1974cedited by B. Donn…[et al.]                                                       aWashingtonbNational Aeronautics and Space Administrationc1976  axxii, 536p.  aNASA SP; 393  aDonated by Mrs. Bappu  aAstronomy and astrophysics thesaurus  aComets  aA'Hearn, M., ed.  aDonn, B., ed.  aJackson, W., ed.  aMumma, M., ed.  aInternational Astronomical Union