Columbia subject headings:
Soviet Union--History--Revolution, 1917-1921.
World War, 1914-1918--Influence.
World War, 1914-1918--Peace.
Harvard subject headings:
Soviet Union--History--Revolution, 1917-1921.
World War, 1914-1918--Influence
World War, 1914-1918--Peace
Princeton subject headings:
Soviet Union--History--Revolution, 1917-1921.
World War, 1914-1918--Influence.
World War, 1914-1918--Peace.