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by Reznik, Oleg I., M.D.
by J. Arch Getty and Oleg V. Naumov
by Oleg V. Khlevniuk; Translated by Nora Seligman Favorov
by Demin; Oleg
by Grabar, Oleg
by Sheluhin, Oleg; Smolskiy, Sergey; Osin, Andrew
by Gasparyan, Oleg
by Briggs, Andrew; Kolosov, Oleg
by Vyadro, Oleg A.
by Bychkov,Oleg V.