Columbia subject headings:
Harvard subject headings:
Piedmont (Italy)--Economic conditions.
Wine and wine making--Economic aspects--Italy--Piedmont.
Wine industry--Economic aspects--Italy--Piedmont.
Princeton subject headings:
Agriculture--Economic aspects--Italy--Piemonte--History.
Viticulture--Italy--Piemonte--History.
Wine and wine making--Italy--Piemonte--History.
Wine industry--Italy--Piemonte--History.