00506nam a2200169Ia 4500003000900000008004100009040001600050080001800066100002100084245004800105250001200153260005900165300000900224650002300233650004300256710003700299IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a083.8:52bMAR  aMarsden, Brian G 0aCatalogue of cometary orbitscB. G. Marsden  a2nd ed.  aCambridgebSmithsonian Astrophysical Observatoryc1975  a83p.  a Catalogue-Comets  aAstronomy and Astrophysics Thesaurus   aInternational Astronomical Union