01017nam a2200229Ia 4500003000900000008004100009040001600050080002300066111009200089245023900181260006800420300001500488490002400503500002600527650004100553650001600594700001800610710003800628942000700666999001500673952009900688IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a523.64(082.2)bDON  aInternational Astronomical Union Colloquiumn25thcMarylandd1974 Oct. 28-Nov. 1912883 4aThe study of cometsbpt. 2, proceedings of the International Astronomical Union Colloquium No.25, Co-sponsored by COSPAR and held at Goddard Space Flight Center, Green Belt, Maryland, October 28-November 1, 1974cedited by B. Donn      aWashingtonbNational Aeronautics and Space Administrationc1976  a537-1083p.  aNASA SP-393; no. 25  aDonated by Mrs. Bappu  aAstronomy and Astrophysics Thesaurus  aComets9755  aDonn, B., ed.  aInternational Astronomical Union   cBK  c7613d7613  00104070aBANbBANcGENd1983-07-21l0o523.64(082.2)/ DONp8427r2021-11-05w1983-07-21yBK