Columbia subject headings:
Germany--Foreign relations--1789-1900.
Germany--Foreign relations--Italy.
Italy--Foreign relations--1815-1870.
Italy--Foreign relations--Germany.
Harvard subject headings:
Germany--Foreign relations--1789-1900.
Germany--Foreign relations--Italy.
Italy--Foreign relations--1815-1870.
Italy--Foreign relations--Germany.
Princeton subject headings:
Italy--Foreign public opinion, German.
Italy--Politics and government--1492-1789.
Italy--Politics and government--1789-1860.
Public opinion--Germany--History.