Columbia subject headings:
Harvard subject headings:
Austria--History--Joseph II, 1780-1790--Congresses.
Austria--History--Maria Theresa, 1740-1780--Congresses.
Austria--Relations--Hungary--Congresses.
Hungary--History--1699-1848--Congresses.
Hungary--Relations--Austria--Congresses.
Princeton subject headings:
Austria--History--Joseph II, 1780-1790--Congresses.
Austria--History--Maria Theresa, 1740-1780--Congresses.
Hungary--History--1699-1848--Congresses.