While he is predominantly viewed as a [[science fiction]] writer, he produced works on many subjects both fiction and nonfiction; of particular note are his works on astronomy and his books of collected essays. He also earned a doctorate in [[chemistry]] from Columbia University in 1948<ref>Grolier Encyclopedia</ref> <ref>http://www.asimovonline.com/asimov_FAQ.html#non-literary3.</ref>. Asimov was one of the most prolific writers of the Twentieth or, indeed, any century; a [[conservative estimate]] puts him as the author of more than three hundred books. | While he is predominantly viewed as a [[science fiction]] writer, he produced works on many subjects both fiction and nonfiction; of particular note are his works on astronomy and his books of collected essays. He also earned a doctorate in [[chemistry]] from Columbia University in 1948<ref>Grolier Encyclopedia</ref> <ref>http://www.asimovonline.com/asimov_FAQ.html#non-literary3.</ref>. Asimov was one of the most prolific writers of the Twentieth or, indeed, any century; a [[conservative estimate]] puts him as the author of more than three hundred books. |