B. F. Porshnev

Boris Fedorovich Porshnev (Russian Cyrillic: Поршнев Борис Фёдорович; 1905-1972) was a Soviet Russian historian and sociologist.

Reading

 * https://www.nytimes.com/1964/02/18/archives/soviet-scientist-believes-snowmen-are-neanderthal-survivors.html