00435nam a2200145Ia 4500003000600000005001700006008004100023020001800064040002500082082002100107100001700128245006800145260003000213500004600243NORSU20240719054720.0240214s9999 xx 000 0 und d a0-8160-4873-8 aNORSU-DumcNORSU-Dum a551.397 Er1 2003 aJon Erickson 0aASTEROIDS, COMETS, AND METEORITES: Cosmic Invaders of the Earth bFacts On File, Inc.c2003 aIncludes Glossary, Bibliography and Index