Columbia subject headings:
Harvard subject headings:
Champagne (Wine)--History--Congresses.
Champagne (Wine)--History.
Wine and wine making--France--Champagne-Ardenne--History--Congresses.
Wine and wine making--France--Champagne-Ardenne--History.
Princeton subject headings:
Champagne (Wine)--History.
Wine and wine making--France--Champagne-Ardenne--History.