Columbia subject headings:
Harvard subject headings:
Iron industry and trade--Japan--Sendai-han--History.
Iron--Metallurgy--History
Steel industry and trade--Japan--Sendai-han--History.
Steel--Metallurgy--History.
Princeton subject headings:
Iron industry and trade--Japan--Sendai-han--History.
Iron--Metallurgy--History.
Steel industry and trade--Japan--Sendai-han--History.
Steel--Metallurgy--History.