Columbia subject headings:
Iron-works--Japan--History--To 1500.
Japan--Description and travel.
Japan--History--To 794.
Names, Geographical--Japan.
Harvard subject headings:
Iron-works--Japan
Japan--Description and travel
Japan--History--To 794.
Names, Geographical--Japan
Princeton subject headings:
Iron-works--Japan.
Japan--Description and travel.
Japan--History--To 794.
Names, Geographical--Japan.