Did comets kill the dinosaurs? (Isaac Asimov's library of the universe)

Name: Did comets kill the dinosaurs? (Isaac Asimov's library of the universe)
Author: /author/%E3%82%A2%E3%82%A4%E3%82%B6%E3%83%83%E3%82%AF%E3%83%BB%E3%82%A2%E3%82%B7%E3%83%A2%E3%83%95_(%E3%83%95%E3%82%A1%E3%82%A6%E3%83%B3%E3%83%87%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3)