Columbia subject headings:
Harvard subject headings:
Hungary--Foreign relations--Austria--Styria--Congresses.
Hungary--History--Revolution, 1956--Congresses.
Styria (Austria)--Foreign relations--Hungary--Congresses.
Styria (Austria)--Politics and government--20th century--Congresses.
Princeton subject headings:
Hungary--Foreign relations--Austria--Styria--Congresses.
Hungary--History--Revolution, 1956--Congresses.
Styria (Austria)--Foreign relations--Hungary--Congresses.
Styria (Austria)--Politics and government--20th century--Congresses.