http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 videocassette (60 min.) : sound, color ; 1/2 in.
Conway Morris discusses geological causes of mass extinctions, especially the theory that the impact of an asteroid on the Yucatan Peninsula caused the extinction of dinosaurs and most other life on the planet, ending the Cretaceous period. Also discusses the impact of a meteor in Siberia early this century.
a production of the British Broadcasting Corporation and the Royal Institution of Great Britain ; producer, Cynthia Page ; director, Ian Russell.
Camera, Colin Hazelwood ; editor, Ian Rutter.