Columbia subject headings:
Austria--Foreign relations--1918-1938--Congresses.
Austria--History--1918-1938--Congresses.
Austria--Politics and government--1918-1938--Congresses.
Harvard subject headings:
Austria--Foreign relations--1918-1938--Congresses.
Austria--History--1918-1938--Congresses.
Austria--Politics and government--1918-1938--Congresses.
Princeton subject headings:
Austria--Foreign relations--1918-1938--Congresses.
Austria--History--1918-1938--Congresses.
Austria--Politics and government--1918-1938--Congresses.