Columbia subject headings:
Harvard subject headings:
Arborea (Italy)--History--Congresses.
Oristano (Italy : Province)--History--Congresses.
Oristano (Italy)--History--Congresses.
Sardinia (Italy)--History--Congresses.
Princeton subject headings:
Arborea (Italy)--History--Congresses.
Oristano (Italy : Province)--History--Congresses.