Columbia subject headings:
Harvard subject headings:
Maria Beatrice d'Este, Duchess of Massa and Carrara, -1829--Congresses.
Massa-Carrara (Italy : Province)--Civilization--Congresses.
Princeton subject headings:
Maria Beatrice d'Este, consort of Ferdinand, Archduke of Austria, 1750-1829.
Massa-Carrara (Italy :Duchy)--History--Congresses.