Columbia subject headings:
Harvard subject headings:
Harbors--France--Loire River Estuary--History.
Loire River Estuary (France)--History.
Nantes Region (France)--History.
Saint-Nazaire Region (France)--History.
Shipping--France--Loire River Estuary--History.
Princeton subject headings:
Loire River Estuary (France)--History.
Nantes (France)--History.
Saint-Nazaire (France)--History.