%0 Journal Article %T From the Professor D. P. Grigoriev Archive: Professor A. Ya. Mickey’s letters %A Voytehovskiy, Y.L. %K D. P. Grigoriev, A. Ya. Mickey, personal archives, history of mineralogy %J Vestnik of geosciences %D 2024 %N 0 %P 7 %I FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"