Columbia subject headings:
Austria--Foreign relations--Germany.
Austria--Foreign relations--Russia.
Bismarck, Otto, Fürst von, 1815-1898.
Europe--History--1871-1918.
Germany--Foreign relations--Austria.
Germany--Foreign relations--Russia.
Russia--Foreign relations--Austria.
Russia--Foreign relations--Germany.
Three Emperors' League, 1872.
Harvard subject headings:
Princeton subject headings:
Austria--Foreign relations--Germany.
Austria--Foreign relations--Russia.
Bismarck, Otto, Fürst von, 1815-1898.
Europe--History--1871-1918.
Germany--Foreign relations--Austria.
Germany--Foreign relations--Russia.
Russia--Foreign relations--Austria.
Russia--Foreign relations--Germany.
Three Emperors' League, 1872.