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Russia after Genoa and The Hague
Coolidge, Archibald Cary, (1972)
The Kremlin and the Prague Spring
Dawisha, Karen, (1984)
The Soviet invasion of Czechoslovakia : its effects on Eastern Europe
Czerwiński, Edward J., (1972)
Pol'slie revoljucionnye vojska v Rossii v 1917-1920 godach - Doe polnischen revolutionären Truppen in der Sowjetrepublik, 1917-1920
Golub, P. A., (1958)