Columbia subject headings:
Harvard subject headings:
Austria--History--Maria Theresa, 1740-1780--Congresses.
Austria--Politics and government--1789-1900--Congresses.
Austria--Politics and government--18th century--Congresses.
Constitutional history--Austria--Congresses.
Maria Theresa, Empress of Austria, 1717-1780--Congresses.
Princeton subject headings:
Austria--History--Maria Theresa, 1740-1780--Congresses.
Austria--Politics and government--1789-1900--Congresses.
Austria--Politics and government--18th century--Congresses.
Constitutional history--Austria--Congresses.
Maria Theresa, Empress of Austria, 1717-1780--Congresses.