Columbia subject headings:
Coastal zone management--France--Languedoc--Congresses.
Coasts--France--Languedoc--Congresses.
Languedoc (France)--History--Congresses.
Harvard subject headings:
Coasts--France--Languedoc--History--Congresses.
Languedoc (France)--Civilization--Congresses.
Navigation--France--Languedoc--History--Congresses.
Princeton subject headings:
Coasts--France--Languedoc--History--Congresses.
Languedoc (France)--Civilization--Congresses.
Navigation--France--Languedoc--History--Congresses.