Russia's foreign relations during the last half century / by S.A. Korff.

by Korff, S. A. (Sergeĭ Aleksandrovich), baron, 1876-1924.
Published 1922

Autocracy and revolution in Russia / by Baron Sergius A. Korff.

by Korff, S. A. (Sergeĭ Aleksandrovich), baron, 1876-1924.
Published 1923