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Browsing Smithsonian Under Secretary for Science by Subject "Catastrophes (Geology)"

Browsing Smithsonian Under Secretary for Science by Subject "Catastrophes (Geology)"

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  • Evans, David L. (Smithsonian Institution. Office of the Under Secretary for Science., 2006-05-12)
    Introduction from Dr. David Evans, Smithsonian Under Secretary for Science -- The Supernova Problem -- Permian/ Triassic Mass Extinction -- Neotropical Plant Diversity -- Monitoring Shifting Sands

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