01247nam a2200289Ia 4500003000900000008004100009020001800050040001600068080002100084111008200105245028700187260004200474300001700516490002600533500002600559650004100585650001600626650002600642650002500668700003300693700004300726700003100769710003800800942000700838999001500845952009700860IN-BaIIA211028s9999    xx            000 0 eng d  a90-277-0207-1  cIIA Library  a082.2:52bIAU-45  aInternational Astronomical Union Symposiumn45thcUSSRd1970 Aug. 4-11912928 4aThe motion, evolution of orbits, and origin of cometsbproceedings of the International Astronomical Union Symposium No.45 held in Leningard, USSR August 4-11 1970cedited by G. A. Chebotarev, E. Kazimirchak-Polonskaya and B. G. Marsden                                                aDordrechtbD. Reidel Publishingc1972  axxiii, 521p.  aIAU Symposium; no. 45  aDonated by Mrs. Bappu  aAstronomy and Astrophysics Thesaurus  aComets9755  aOrbital Motions97179  aStellar Motion97180  aChebotarev, G. A., ed.97181  aKazimirchak-Polonskaya, E., ed.912929  aMarsden, B. G., ed.912930  aInternational Astronomical Union   cBK  c7646d7646  00104070aBANbBANcGENd1983-07-25l0o082.2:52/ IAU-45p8460r2021-11-05w1983-07-25yBK