Columbia subject headings:
Austria--History--1815-1848.
Austria--History--1848-1867.
Austria--History--1867-1918.
Austria--History--20th century.
Harvard subject headings:
Austria--History--1815-1848.
Austria--History--1848-1867.
Austria--History--1867-1918.
Austria--History--20th century.
Princeton subject headings:
Austria--History--1815-1848.
Austria--History--1848-1867.
Austria--History--1867-1918.
Austria--History--20th century.