Columbia subject headings:
Bridges--France--Saint-Gilles (Gard)
Saint-Gilles (Gard, France)--History.
Harvard subject headings:
Bridges--France--Petit-Rhône--Design and construction.
Bridges--France--Saint-Gilles--Design and construction.
Bridges--France--Saint-Gilles--History.
Saint-Gilles (Gard, France)
Princeton subject headings:
Bridges--France--Saint-Gilles (Gard)--Design and construction--History.
Bridges--France--Saint-Gilles (Gard)--History.