Columbia subject headings:
Genoa (Italy)--History--1339-1528.
Genoa (Italy)--History--To 1339.
Piedmont (Italy)--History.
Harvard subject headings:
Liguria (Italy)--History.
Liguria (Italy)--Social conditions.
Piedmont (Italy)--History.
Piedmont (Italy)--Social conditions.
Piemonte (Italy)--Social conditions.
Princeton subject headings: