Columbia subject headings:
Harvard subject headings:
Austria--Foreign relations--1867-1918.
Austria--History--1967-1918.
Habsburg, House of--History--20th century.
World War, 1914-1918--Austria
World War, 1914-1918--Causes
World War, 1914-1918--Hungary
Princeton subject headings:
Austria--Foreign relations--1867-1918.
World War, 1914-1918--Austria.
World War, 1914-1918--Causes.
World War, 1914-1918--Hungary.