01150nam a2200265Ia 4500003000900000008004100009040001600050080002500066111009100091245025100182260006800433300001600501490001700517500002600534650004100560650001600601700002800617700002500645700002800670700002600698710003700724942000700761999001500768952010100783IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.64(082.2)bDON-2  aInternational Astronomical Union colloqiumn25thcMarylandd1974 Oct. 28 Nov. 1912692 4aThe study of cometsbpt. 2, 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,1083p.  aNASA SP; 393  aDonated by Mrs. Bappu  aAstronomy and Astrophysics Thesaurus  aComets9755  aA'Hearn, M., ed.912693  aDonn, B., ed.912694  aJackson, W., ed.912695  aMumma, M., ed.912696  aInternational Astronomical Union  cBK  c7425d7425  00104070aBANbKAVcGENd1983-07-06l0o523.64(082.2)/ DON-2p8234r2021-11-05w1983-07-06yBK