Columbia subject headings:
Europe--Politics and government--1871-1918.
Germany--Foreign relations--1871-
World War, 1914-1918--Diplomatic history.
Harvard subject headings:
Europe--Politics and government--1871-1918.
Germany--Foreign relations--1871-
World War, 1914-1918--Diplomatic history
Princeton subject headings:
Europe--Politics and government--1871-1918.
Germany--Foreign relations--1871-
World War, 1914-1918--Diplomatic history.