Columbia subject headings:
Russia--History--February Revolution, 1917.
Russia. Gosudarstvennai︠a︡ Duma--History.
Harvard subject headings:
Russia--History--February Revolution, 1917.
Russia. Gosudarstvennai︠a︡ Duma--History.
Princeton subject headings:
Russia--History--February Revolution, 1917.
Russia. Gosudarstvennai︠a︡ Duma--History.