Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--History--20th century.
France--Foreign relations--1914-1940.
France--Foreign relations--Great Britain.
Great Britain--Foreign relations--1910-1936.
Great Britain--Foreign relations--France.
World War, 1914-1918--Balkan Peninsula
Princeton subject headings:
Balkan Peninsula--History--20th century.
France--Foreign relations--1914-1940.
France--Foreign relations--Great Britain.
Great Britain--Foreign relations--1910-1936.
Great Britain--Foreign relations--France.
World War, 1914-1918--Balkan Peninsula.