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© 1997 American Institute of Physics.
1997
American Institute of Physics
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John S. Lewis, Duncan Steel, David Morrison; Rain of Iron and Ice: The Very Real Threat of Comet and Asteroid Bombardment and Rogue Asteroids and Doomsday Comets: The Search for the Million Megaton Menace That Threatens Life on Earth. Physics Today 1 February 1997; 50 (2): 65–66. https://doi.org/10.1063/1.881678
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