Columbia subject headings:
Harvard subject headings:
Austria--Ethnic relations.
Austria--Kings and rulers--Abdication.
Austria--Kings and rulers.
Austria--Politics and government--1848-1918.
Bauer, Otto, 1881-1938.
Charles I, Emperor of Austria, 1887-1922.
Habsburg, House of.
Nationalism--Austria--History--20th century.
Princeton subject headings:
Austria--History--1867-1918.
Bauer, Otto, 1881-1938.
Nationalism--Austria--History--20th century.