Columbia subject headings:
Soviet Union--History--Revolution, 1917-1921.
Ural Mountains (Russia)--Social conditions--20th century.
Harvard subject headings:
Soviet Union--History--Revolution, 1917-1921.
Ural Mountains (Russia)--Social conditions--20th century.
Princeton subject headings:
Ural Mountains Region (Russia)--Civilization.
Ural Mountains Region (Russia)--History--Revolution, 1917-1921.
Ural Mountains Region (Russia)--Intellectual life.
Ural Mountains Region (Russia)--Social life and customs.