Columbia subject headings:
Europe--Politics and government--1871-1918.
Triple Alliance, 1882.
Harvard subject headings:
Austria--Foreign relations--1867-1918.
Europe--Politics and government--1871-1918.
Germany--Foreign relations--1871-1918.
Italy--Foreign relations--1870-1914.
Triple Alliance, 1882.
Princeton subject headings:
Austria--Foreign relations--1867-1918.
Europe--Politics and government--1871-1918.
Germany--Foreign relations--1871-1918.
Italy--Foreign relations--1870-1914.
Italy--Foreign relations--1914-1945.
Triple Alliance, 1882.