Columbia subject headings:
Black Sea Region--Politics and government--Sources.
Russia--Foreign relations--Turkey--Sources.
Turkey--Foreign relations--Russia--Sources.
World War, 1914-1918--Campaigns--Turkey.
Harvard subject headings:
Black Sea Region--Politics and government--Sources.
Russia--Foreign relations--Turkey--Sources.
Turkey--Foreign relations--Russia--Sources.
World War, 1914-1918--Campaigns--Turkey
Princeton subject headings:
Black Sea Region--Politics and government--Sources.
Russia--Foreign relations--Turkey--Sources.
Turkey--Foreign relations--Russia--Sources.
World War, 1914-1918--Campaigns--Turkey.