Columbia subject headings:
Germany--Foreign relations--Turkey.
Turkey--Foreign relations--Germany.
Turkey--History, Naval.
World War, 1914-1918--Turkey.
Harvard subject headings:
Germany--Foreign relations--Turkey.
Turkey--Foreign relations--Germany.
Turkey--History, Naval.
World War, 1914-1918--Turkey
Princeton subject headings:
Germany--Foreign relations--Turkey.
Turkey--Foreign relations--Germany.
World War, 1914-1918--Turkey.