Columbia subject headings:
Austria--History--1867-1918.
Vienna (Austria)--History.
World War, 1914-1918--Causes.
Harvard subject headings:
Austria--History--1867-1918.
Vienna (Austria)--History.
World War, 1914-1918--Causes
Princeton subject headings:
Austria--History--1867-1918.
Vienna (Austria)--History.
World War, 1914-1918--Causes.