01138nam a2200277Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 90-277-0207-1 IIA Library 082.2:52 IAU-45 International Astronomical Union Symposium 45th USSR 1970 Aug. 4-11 12928 The motion, evolution of orbits, and origin of comets proceedings of the International Astronomical Union Symposium No.45 held in Leningard, USSR August 4-11 1970 edited by G. A. Chebotarev, E. Kazimirchak-Polonskaya and B. G. Marsden Dordrecht D. Reidel Publishing 1972 xxiii, 521p. IAU Symposium; no. 45 Donated by Mrs. Bappu Astronomy and Astrophysics Thesaurus Comets 755 Orbital Motions 7179 Stellar Motion 7180 Chebotarev, G. A., ed. 7181 Kazimirchak-Polonskaya, E., ed. 12929 Marsden, B. G., ed. 12930 International Astronomical Union BK 7646 7646 0 0 0 0 BAN BAN GEN 1983-07-25 0 082.2:52/ IAU-45 8460 2021-11-05 1983-07-25 BK