Columbia subject headings:
Ethnology--Madagascar.
Iron industry and trade--Madagascar--History.
Iron--Metallurgy--History.
Harvard subject headings:
Iron industry and trade--Madagascar--History.
Iron--Metallurgy--History
Madagascar--Antiquities.
Metal-work, Prehistoric--Madagascar.
Princeton subject headings:
Iron age--Madagascar.
Iron industry and trade--Madagascar--History.
Iron--Metallurgy--History.
Madagascar--Antiquities.