Search for: [Subject = Treaty of Riga \(1921\)] OR [Subject = citizenship] OR [Subject = Poland] OR [Subject = political history] OR [Subject = Traktat ryski \(1921\)] OR [Subject = obywatelstwo] OR [Subject = Polska] OR [Subject = historia polityczna] OR [Title = Obywatelstwo i opcja w traktacie ryskim] OR [Creator = Rundstein, Szymon \(1876\-1942\)]
