'You have always been and still remain an indefatigable servant of the soviet historical science' (commentaries on S.I. Arkhangel'skii and I.N. Borozdin's letters to each other)

'You have always been and still remain an indefatigable servant of the soviet historical science' (commentaries on S.I. Arkhangel'skii and I.N. Borozdin's letters to each other)