Columbia subject headings:
India--Antiquities.
Metal-work, Prehistoric--India.
Metallurgy--India--History.
Mineral industries, Prehistoric--India.
Harvard subject headings:
India--Antiquities
India--History
Metal trade--India--History.
Metallurgy--India--History.
Metalworking industries--India--History.
Princeton subject headings:
Metal trade--India--History.
Metal-work--India--History.
Metallurgy--India--History.