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Book, 1999
Current format, Book, 1999, , Available .
Book, 1999
Current format, Book, 1999, , Available . Offered in 0 more formats
Carl Sagan, who died in December 1996, is one of the few scientists whose name has become a household word all around the globe. The first man to recognise and name the greenhouse effect, Sagan was a force behind the search for extraterrestrial intelligence.
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