Columbia subject headings:
Russia (Federation)--Historiography.
Russia (Federation)--History--Sources.
Russia--History--1801-1917--Historiography.
Russia--History--1801-1917--Sources.
Soviet Union--Historiography.
Soviet Union--History--Sources.
Harvard subject headings:
Russia (Federation)--Historiography.
Russia (Federation)--History--Sources.
Russia--History--1801-1917--Sources.
Russia--History--1801-1917.
Soviet Union--Historiography.
Soviet Union--History--Sources.
Princeton subject headings: