Columbia subject headings:
Caucasus, Northern (Russia)--History.
Harvard subject headings:
Soviet Union--History--Revolution, 1917-1921.
Soviet Union. Raboche-Krestʹi͡anskai͡a Krasnai͡a Armii͡a. Severo-Kavkazskiĭ voennyĭ okrug.
World War, 1939-1945--Soviet Union.
Princeton subject headings: