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On April 22, 1908, Soviet science fiction writer, paleontologist, cosmic philosopher and social thinker Ivan yefremov was born.
Soviet writer Ivan Yefremov (1907-1972).
Dr. Ivan Yefremov, professor and sci fi writer.
Prof. Ivan Yefremov, Ph.D.(Biology), writer.
Ivan Yefremov, writer and professor of paleontology.
Professor of paleonthology and science-fiction writer Ivan Yefremov examines dinosaur skull, which was found in Mongolia.
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