Columbia subject headings:
Harvard subject headings:
Styria (Austria)--History, Military--20th century--Congresses.
Styria (Austria)--History--20th century--Congresses.
Terrorism--Austria--Styria--History--20th century--Congresses.
World War, 1939-1945--Austria--Styria--Congresses.
Princeton subject headings:
World War, 1939-1945--Austria--Styria--Peace--Congresses.