Columbia subject headings:
Foundries--Gaul--History.
Gaul--Antiquities.
Mines and mineral resources--Gaul--History.
Harvard subject headings:
Foundries--Gaul--History.
Gaul--Antiquities.
Mines and mineral resources--Gaul--History.
Princeton subject headings:
Foundries--Gaul--History.
Gaul--Antiquities.
Mines and mineral resources--Gaul--History.