Columbia subject headings:
Austria--Politics and government--1867-1918.
Diplomats--Austria--History--20th century.
Hoyos, Alexander von, 1876-1937.
Monarchy--Austria--History--20th century.
Monarchy--Hungary--History--20th century.
Politicians--Austria--History--20th century.
World War, 1939-1945--Diplomatic history.
Harvard subject headings:
Austria--Politics and government--1867-1918.
Diplomats--Austria--History--20th century.
Hoyos, Alexander von, 1876-1937.
Monarchy--Austria--History--20th century.
Monarchy--Hungary--History--20th century.
Politicians--Austria--History--20th century.
Princeton subject headings: