Columbia subject headings:
Austria--Foreign relations--18th century.
Austria--Foreign relations--Soviet Union.
Austria--Foreign relations--Turkey.
Soviet Union--Foreign relations--Austria.
Turkey--Foreign relations--Austria.
Harvard subject headings:
Austria--Foreign relations--18th century.
Austria--Foreign relations--Soviet Union.
Austria--Foreign relations--Turkey.
Soviet Union--Foreign relations--Austria.
Turkey--Foreign relations--Austria.
Princeton subject headings:
Austria--Foreign relations--18th century.
Austria--Foreign relations--Russia.
Austria--Foreign relations--Turkey.
Russia--Foreign relations--Austria.
Turkey--Foreign relations--Austria.