Columbia subject headings:
Camargue (France)--History.
Salt industry and trade--France--Camargue--History.
Harvard subject headings:
Salt marshes--France, Southern--18th century.
Salt marshes--France, Southern--19th century.
Princeton subject headings:
Salt industry and trade--France, Southern--History--18th century.
Salt industry and trade--France, Southern--History--19th century.
Salt marshes--France, Southern--History--18th century.
Salt marshes--France, Southern--History--19th century.