Columbia subject headings:
Russia--Politics and government--1894-1917.
Soviet Union--History--Revolution, 1917-1921--Causes.
Soviet Union--History--Revolution, 1917-1921--Historiography.
Soviet Union--History--Revolution, 1917-1921.
Harvard subject headings:
Russia--Politics and government--1894-1917--Sources.
Soviet Union--History--Revolution, 1917-1921--Causes--Sources.
Soviet Union--History--Revolution, 1917-1921--Historiography.
Soviet Union--History--Revolution, 1917-1921--Sources.
Princeton subject headings:
Russia--History--February Revolution, 1917--Pictorial works.
Russia--History--February Revolution, 1917--Sources.
Russia--Politics and government--1914-1917--Pictorial works.
Russia--Politics and government--1914-1917--Sources.
Soviet Union--History--Revolution, 1917-1921--Sources.