00672nam a2200193Ia 4500003000900000008004100009020001800050040001600068080001600084100002800100245011000128260004300238300001500281650002100296650001600317942000700333999001700340952012100357IN-BaIIA211028s9999    xx            000 0 eng d  a0-19-511919-3  cIIA Library  a523.64bVER  aVerschuur, G. L.915861 0aImpactbthe threat of comets and asteriodscG. L. Verschuur                                                aNewyorkbOxford University Pressc1996  axii, 237p.  aAsteriods921873  aComets9755  cBK  c12495d12495  00104070aBANbBANcGENd1998-05-18g345.00l0o523.64/ VERp13412r2021-11-05v345.00w1998-05-18yBKGRs. 345.00