Rain of iron and ice the very real threat of comet and asteroid bombardment

Rain of iron and ice the very real threat of comet and asteroid bombardment

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Manylion Llyfryddiaeth
Prif Awdur: Lewis, John S.
Fformat: Llyfr
Cyhoeddwyd: Reading, Mass. Addison-Wesley c1996.
Cyfres:Helix books
Pynciau:
Comets > Environmental aspects.
Asteroids > Environmental aspects.
Impact.