Columbia subject headings:
Harvard subject headings:
Austria--Boundaries.
Austria--Foreign relations--1918-1938.
Vorarlberg (Austria)--History.
Princeton subject headings:
Germany--Relations--Austria--Vorarlberg.
Liechtenstein--Relations--Austria--Vorarlberg.
Switzerland--Relations--Austria--Vorarlberg.
Vorarlberg (Austria)--Politics and government.
Vorarlberg (Austria)--Relations--Germany.
Vorarlberg (Austria)--Relations--Liechtenstein.
Vorarlberg (Austria)--Relations--Switzerland.