Columbia subject headings:
Harvard subject headings:
Aqueducts--Design and construction.
Gard (France)--Antiquities, Roman.
Nîmes (France)--Antiquities, Roman.
Pont du Gard (France)--History.
Water-supply engineering--France--Nîmes--History.
Princeton subject headings:
Aqueducts--France--Nîmes.
Bridges--France--Nîmes.
France--Antiquities, Roman.
Nîmes (France)--Buildings, structures, etc.
Nîmes (France)--Maps.
Romans--France--Nîmes.