Columbia subject headings:
Harvard subject headings:
Austria--Foreign relations--Czech Republic--Exhibitions.
Austria--Foreign relations--Czechoslovakia--Exhibitions.
Austria--Foreign relations--Slovakia--Exhibitions.
Czech Republic--Foreign relations--Austria--Exhibitions.
Czechoslovakia--Foreign relations--Austria--Exhibitions.
Slovakia--Foreign relations--Austria--Exhibitions.
Princeton subject headings:
Austria--Foreign relations--Czech Republic--Exhibitions.
Austria--Foreign relations--Czechoslovakia--Exhibitions.
Austria--Foreign relations--Slovakia--Exhibitions.
Czech Republic--Foreign relations--Austria--Exhibitions.
Czechoslovakia--Foreign relations--Austria--Exhibitions.
Slovakia--Foreign relations--Austria--Exhibitions.