Columbia subject headings:
Harvard subject headings:
Diplomacy
Europe--Politics and government--1871-1918.
France--Foreign relations--1870-
France--Foreign relations--1870-1940.
World War, 1914-1918--Causes
Princeton subject headings:
Diplomacy.
Europe--Politics and government--1871-1918.
France--Foreign relations--1870-1940.
World War, 1914-1918--Causes.