Konstantin Pyatnitsky
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Konstantin Petrovich Pyatnitsky (Russian: Константин Петрович Пятницкий; 31 March 1864 – 6 January 1938) was a Russian journalist, publisher and memoirist from the Russian Empire and Soviet Union. Pyatnitsky was a co-founder of the publishing company Znanie and one–time close associate of Maxim Gorky.[1][2]