This publication reveals letters exchanged between N.M. and E.I. Druzhinins and historian I.S. Porokh, uncovering rich historical insights. The correspondence spans from 1959 to 1986.
The publication by S.V. Levin and V.A. Solomonov contains correspondence between N.M. and E.I. Druzhinins and a Saratov historian I.S. Porokh in 1959-1986. The letters are kept in the Archive of the Russian Academy of Sciences and V.A. Solomonov’s personal archive.
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LEVIN et al. (2025) studied this question.
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