Columbia subject headings:
Harvard subject headings:
Franche-Comté (France)--Antiquities.
Iron industry and trade--France--Franche-Comté--History.
Metal-work, Prehistoric--France--Franche-Comté
Metallurgy--France--Franche-Comté--History.
Mines and mineral resources--France--Franche-Comté
Mines and mineral resources--France--Franche-Comté--History.
Mining engineering--France--Franche-Comté--History.
Princeton subject headings:
Franche-Comté (France)--Antiquities.
Iron industry and trade--France--Franche-Comté--History.
Metallurgy--France--Franche-Comté--History.
Mines and mineral resources--France--Franche-Comté--History.