Columbia subject headings:
Harvard subject headings:
Plekhanov, Georgiĭ Valentinovich, 1856-1918.
Socialism--Soviet Union
Princeton subject headings:
Plekhanov, Georgiĭ Valentinovich, 1856-1918.
Revolutions and socialism--Russia--Historiography.
Russia--History--Revolution, 1905-1907--Historiography.
Soviet Union--History--Revolution, 1917-1921--Historiography.