Columbia subject headings:
Europe--Politics and government--1871-1918.
Russia--Foreign relations--1801-1917.
Russia--Foreign relations--1894-1917.
World War, 1914-1918--Causes.
Harvard subject headings:
Europe--Politics and government--1871-1918.
Russia--Foreign relations--1801-1917.
Russia--Foreign relations--1894-1917.
Russia--Foreign relations.
World War, 1914-1918--Causes
Princeton subject headings: