Columbia subject headings:
Harvard subject headings:
Europe--Politics and government--1871-1918.
Germany--Foreign relations--Turkey.
Russo-Turkish War, 1877-1878.
Turkey--Foreign relations--Germany.
Princeton subject headings:
Diplomats--Germany--Biography.
Eastern question (Balkan)
Europe--Politics and government--1871-1918.
Raschdau, Ludwig.
Russo-Turkish War, 1877-1878.