00906nam a2200217Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d IIA Library 523.64(082.2) DON International Astronomical Union Colloquium 25th Maryland 1974 Oct. 28-Nov. 1 12883 The study of comets pt. 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, 1974 edited by B. Donn Washington National Aeronautics and Space Administration 1976 537-1083p. NASA SP-393; no. 25 Donated by Mrs. Bappu Astronomy and Astrophysics Thesaurus Comets 755 Donn, B., ed. International Astronomical Union BK 7613 7613 0 0 0 0 BAN BAN GEN 1983-07-21 0 523.64(082.2)/ DON 8427 2021-11-05 1983-07-21 BK