Title: Rewolucja rosyjska a sprawa polska 1917-1918
Subjects: Foreign relations, History, Polish question, Ukraïnsʹka Narodna Respublika. Treaties, etc. 1918 Feb. 9., Treaty of Brest-Litovsk, Diplomatic relations, Treaty of Brest-Litovsk (1918 February 9)
Places: Poland, Soviet Union
Time periods: German occupation, 1914-1918, Revolution, 1917-1921