00675nam a2200181Ia 4500003000900000008004100009040001600050080002100066110003600087245009700123260007900220300002300299650002500322650002400347942000700371999001700378952009800395IN-BaIIA211028s9999    xx            000 0 eng d  cIIA Library  a082.2:52bLIE-13  aInstitut D'Astrophysique911452 0aNature et origine des cometes.cInstitut D'Astrophysique                                      aBelgiquebInstitut D Astrophysique de University de Lege Observatoric1966  a[various pagings.]  aComets Nature920210  aComets Origin92776  cBK  c11684d11684  00104070aBANbBANcGENd1996-03-05l0o082.2:52/ LIE-13p12599r2021-11-05w1996-03-05yBK