Columbia subject headings:
Austria--Foreign relations--Balkan Peninsula.
Balkan Peninsula--Foreign relations--Austria.
World War, 1914-1918--Austria.
World War, 1914-1918--Balkan Peninsula.
World War, 1914-1918--Diplomatic history.
Harvard subject headings:
Austria--Foreign relations--Balkan Peninsula.
Balkan Peninsula--Foreign relations--Austria.
World War, 1914-1918--Austria
World War, 1914-1918--Balkan Peninsula
World War, 1914-1918--Diplomatic history
Princeton subject headings: