Columbia subject headings:
Lenin, Vladimir Ilʹich, 1870-1924.
Marx, Karl, 1818-1883.
Peace.
Soviet Union--Foreign relations.
War and socialism.
Harvard subject headings:
Lenin, Vladimir Ilʹich, 1870-1924
Marx, Karl, 1818-1883
Peace
Soviet Union--Foreign relations.
War and socialism.
Princeton subject headings: